Av(13425, 13452, 13542, 14235, 14253, 14325, 14352, 14523, 14532, 15342, 15423, 15432, 41235, 41253, 41325, 41352, 41523, 41532, 42135, 42153)
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Generating Function
\(\displaystyle \frac{\left(x +1\right) \left(2 x -1\right) \left(2 x^{3}+2 x^{2}+2 x -1\right)^{2}}{4 x^{10}+6 x^{9}-16 x^{8}-15 x^{7}+19 x^{6}+24 x^{5}+4 x^{4}-12 x^{3}-6 x^{2}+6 x -1}\)
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Counting Sequence
1, 1, 2, 6, 24, 100, 407, 1610, 6257, 24048, 91798, 349084, 1324701, 5021539, 19025281, ...
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Implicit Equation for the Generating Function
\(\displaystyle \left(4 x^{10}+6 x^{9}-16 x^{8}-15 x^{7}+19 x^{6}+24 x^{5}+4 x^{4}-12 x^{3}-6 x^{2}+6 x -1\right) F \! \left(x \right)-\left(x +1\right) \left(2 x -1\right) \left(2 x^{3}+2 x^{2}+2 x -1\right)^{2} = 0\)
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Recurrence
\(\displaystyle a(0) = 1\)
\(\displaystyle a(1) = 1\)
\(\displaystyle a(2) = 2\)
\(\displaystyle a(3) = 6\)
\(\displaystyle a(4) = 24\)
\(\displaystyle a(5) = 100\)
\(\displaystyle a(6) = 407\)
\(\displaystyle a(7) = 1610\)
\(\displaystyle a(8) = 6257\)
\(\displaystyle a(9) = 24048\)
\(\displaystyle a{\left(n + 10 \right)} = 4 a{\left(n \right)} + 6 a{\left(n + 1 \right)} - 16 a{\left(n + 2 \right)} - 15 a{\left(n + 3 \right)} + 19 a{\left(n + 4 \right)} + 24 a{\left(n + 5 \right)} + 4 a{\left(n + 6 \right)} - 12 a{\left(n + 7 \right)} - 6 a{\left(n + 8 \right)} + 6 a{\left(n + 9 \right)}, \quad n \geq 10\)
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Explicit Closed Form
\(\displaystyle \frac{27684131947748418410 \mathit{RootOf} \left(4 Z^{10}+6 Z^{9}-16 Z^{8}-15 Z^{7}+19 Z^{6}+24 Z^{5}+4 Z^{4}-12 Z^{3}-6 Z^{2}+6 Z -1, \mathit{index} =3\right)^{-n +5}}{18522575629258326851}+\frac{27684131947748418410 \mathit{RootOf} \left(4 Z^{10}+6 Z^{9}-16 Z^{8}-15 Z^{7}+19 Z^{6}+24 Z^{5}+4 Z^{4}-12 Z^{3}-6 Z^{2}+6 Z -1, \mathit{index} =4\right)^{-n +5}}{18522575629258326851}+\frac{27684131947748418410 \mathit{RootOf} \left(4 Z^{10}+6 Z^{9}-16 Z^{8}-15 Z^{7}+19 Z^{6}+24 Z^{5}+4 Z^{4}-12 Z^{3}-6 Z^{2}+6 Z -1, \mathit{index} =5\right)^{-n +5}}{18522575629258326851}+\frac{27684131947748418410 \mathit{RootOf} \left(4 Z^{10}+6 Z^{9}-16 Z^{8}-15 Z^{7}+19 Z^{6}+24 Z^{5}+4 Z^{4}-12 Z^{3}-6 Z^{2}+6 Z -1, \mathit{index} =6\right)^{-n +5}}{18522575629258326851}+\frac{27684131947748418410 \mathit{RootOf} \left(4 Z^{10}+6 Z^{9}-16 Z^{8}-15 Z^{7}+19 Z^{6}+24 Z^{5}+4 Z^{4}-12 Z^{3}-6 Z^{2}+6 Z -1, \mathit{index} =7\right)^{-n +5}}{18522575629258326851}+\frac{27684131947748418410 \mathit{RootOf} \left(4 Z^{10}+6 Z^{9}-16 Z^{8}-15 Z^{7}+19 Z^{6}+24 Z^{5}+4 Z^{4}-12 Z^{3}-6 Z^{2}+6 Z -1, \mathit{index} =8\right)^{-n +5}}{18522575629258326851}+\frac{27684131947748418410 \mathit{RootOf} \left(4 Z^{10}+6 Z^{9}-16 Z^{8}-15 Z^{7}+19 Z^{6}+24 Z^{5}+4 Z^{4}-12 Z^{3}-6 Z^{2}+6 Z -1, \mathit{index} =9\right)^{-n +5}}{18522575629258326851}+\frac{27684131947748418410 \mathit{RootOf} \left(4 Z^{10}+6 Z^{9}-16 Z^{8}-15 Z^{7}+19 Z^{6}+24 Z^{5}+4 Z^{4}-12 Z^{3}-6 Z^{2}+6 Z -1, \mathit{index} =10\right)^{-n +5}}{18522575629258326851}+\frac{27684131947748418410 \mathit{RootOf} \left(4 Z^{10}+6 Z^{9}-16 Z^{8}-15 Z^{7}+19 Z^{6}+24 Z^{5}+4 Z^{4}-12 Z^{3}-6 Z^{2}+6 Z -1, \mathit{index} =1\right)^{-n +5}}{18522575629258326851}+\frac{27684131947748418410 \mathit{RootOf} \left(4 Z^{10}+6 Z^{9}-16 Z^{8}-15 Z^{7}+19 Z^{6}+24 Z^{5}+4 Z^{4}-12 Z^{3}-6 Z^{2}+6 Z -1, \mathit{index} =2\right)^{-n +5}}{18522575629258326851}-\frac{1920740386224033582 \mathit{RootOf} \left(4 Z^{10}+6 Z^{9}-16 Z^{8}-15 Z^{7}+19 Z^{6}+24 Z^{5}+4 Z^{4}-12 Z^{3}-6 Z^{2}+6 Z -1, \mathit{index} =1\right)^{-n +4}}{18522575629258326851}-\frac{1920740386224033582 \mathit{RootOf} \left(4 Z^{10}+6 Z^{9}-16 Z^{8}-15 Z^{7}+19 Z^{6}+24 Z^{5}+4 Z^{4}-12 Z^{3}-6 Z^{2}+6 Z -1, \mathit{index} =2\right)^{-n +4}}{18522575629258326851}-\frac{1920740386224033582 \mathit{RootOf} \left(4 Z^{10}+6 Z^{9}-16 Z^{8}-15 Z^{7}+19 Z^{6}+24 Z^{5}+4 Z^{4}-12 Z^{3}-6 Z^{2}+6 Z -1, \mathit{index} =3\right)^{-n +4}}{18522575629258326851}-\frac{1920740386224033582 \mathit{RootOf} \left(4 Z^{10}+6 Z^{9}-16 Z^{8}-15 Z^{7}+19 Z^{6}+24 Z^{5}+4 Z^{4}-12 Z^{3}-6 Z^{2}+6 Z -1, \mathit{index} =4\right)^{-n +4}}{18522575629258326851}-\frac{1920740386224033582 \mathit{RootOf} \left(4 Z^{10}+6 Z^{9}-16 Z^{8}-15 Z^{7}+19 Z^{6}+24 Z^{5}+4 Z^{4}-12 Z^{3}-6 Z^{2}+6 Z -1, \mathit{index} =5\right)^{-n +4}}{18522575629258326851}-\frac{1920740386224033582 \mathit{RootOf} \left(4 Z^{10}+6 Z^{9}-16 Z^{8}-15 Z^{7}+19 Z^{6}+24 Z^{5}+4 Z^{4}-12 Z^{3}-6 Z^{2}+6 Z -1, \mathit{index} =6\right)^{-n +4}}{18522575629258326851}-\frac{1920740386224033582 \mathit{RootOf} \left(4 Z^{10}+6 Z^{9}-16 Z^{8}-15 Z^{7}+19 Z^{6}+24 Z^{5}+4 Z^{4}-12 Z^{3}-6 Z^{2}+6 Z -1, \mathit{index} =7\right)^{-n +4}}{18522575629258326851}-\frac{1920740386224033582 \mathit{RootOf} \left(4 Z^{10}+6 Z^{9}-16 Z^{8}-15 Z^{7}+19 Z^{6}+24 Z^{5}+4 Z^{4}-12 Z^{3}-6 Z^{2}+6 Z -1, \mathit{index} =8\right)^{-n +4}}{18522575629258326851}-\frac{1920740386224033582 \mathit{RootOf} \left(4 Z^{10}+6 Z^{9}-16 Z^{8}-15 Z^{7}+19 Z^{6}+24 Z^{5}+4 Z^{4}-12 Z^{3}-6 Z^{2}+6 Z -1, \mathit{index} =9\right)^{-n +4}}{18522575629258326851}-\frac{1920740386224033582 \mathit{RootOf} \left(4 Z^{10}+6 Z^{9}-16 Z^{8}-15 Z^{7}+19 Z^{6}+24 Z^{5}+4 Z^{4}-12 Z^{3}-6 Z^{2}+6 Z -1, \mathit{index} =10\right)^{-n +4}}{18522575629258326851}-\frac{31526858160777234558 \mathit{RootOf} \left(4 Z^{10}+6 Z^{9}-16 Z^{8}-15 Z^{7}+19 Z^{6}+24 Z^{5}+4 Z^{4}-12 Z^{3}-6 Z^{2}+6 Z -1, \mathit{index} =8\right)^{-n +3}}{18522575629258326851}-\frac{31526858160777234558 \mathit{RootOf} \left(4 Z^{10}+6 Z^{9}-16 Z^{8}-15 Z^{7}+19 Z^{6}+24 Z^{5}+4 Z^{4}-12 Z^{3}-6 Z^{2}+6 Z -1, \mathit{index} =9\right)^{-n +3}}{18522575629258326851}-\frac{31526858160777234558 \mathit{RootOf} \left(4 Z^{10}+6 Z^{9}-16 Z^{8}-15 Z^{7}+19 Z^{6}+24 Z^{5}+4 Z^{4}-12 Z^{3}-6 Z^{2}+6 Z -1, \mathit{index} =10\right)^{-n +3}}{18522575629258326851}-\frac{31526858160777234558 \mathit{RootOf} \left(4 Z^{10}+6 Z^{9}-16 Z^{8}-15 Z^{7}+19 Z^{6}+24 Z^{5}+4 Z^{4}-12 Z^{3}-6 Z^{2}+6 Z -1, \mathit{index} =1\right)^{-n +3}}{18522575629258326851}-\frac{31526858160777234558 \mathit{RootOf} \left(4 Z^{10}+6 Z^{9}-16 Z^{8}-15 Z^{7}+19 Z^{6}+24 Z^{5}+4 Z^{4}-12 Z^{3}-6 Z^{2}+6 Z -1, \mathit{index} =2\right)^{-n +3}}{18522575629258326851}-\frac{31526858160777234558 \mathit{RootOf} \left(4 Z^{10}+6 Z^{9}-16 Z^{8}-15 Z^{7}+19 Z^{6}+24 Z^{5}+4 Z^{4}-12 Z^{3}-6 Z^{2}+6 Z -1, \mathit{index} =3\right)^{-n +3}}{18522575629258326851}-\frac{31526858160777234558 \mathit{RootOf} \left(4 Z^{10}+6 Z^{9}-16 Z^{8}-15 Z^{7}+19 Z^{6}+24 Z^{5}+4 Z^{4}-12 Z^{3}-6 Z^{2}+6 Z -1, \mathit{index} =4\right)^{-n +3}}{18522575629258326851}-\frac{31526858160777234558 \mathit{RootOf} \left(4 Z^{10}+6 Z^{9}-16 Z^{8}-15 Z^{7}+19 Z^{6}+24 Z^{5}+4 Z^{4}-12 Z^{3}-6 Z^{2}+6 Z -1, \mathit{index} =5\right)^{-n +3}}{18522575629258326851}-\frac{31526858160777234558 \mathit{RootOf} \left(4 Z^{10}+6 Z^{9}-16 Z^{8}-15 Z^{7}+19 Z^{6}+24 Z^{5}+4 Z^{4}-12 Z^{3}-6 Z^{2}+6 Z -1, \mathit{index} =6\right)^{-n +3}}{18522575629258326851}-\frac{31526858160777234558 \mathit{RootOf} \left(4 Z^{10}+6 Z^{9}-16 Z^{8}-15 Z^{7}+19 Z^{6}+24 Z^{5}+4 Z^{4}-12 Z^{3}-6 Z^{2}+6 Z -1, \mathit{index} =7\right)^{-n +3}}{18522575629258326851}-\frac{26426763110967448668 \mathit{RootOf} \left(4 Z^{10}+6 Z^{9}-16 Z^{8}-15 Z^{7}+19 Z^{6}+24 Z^{5}+4 Z^{4}-12 Z^{3}-6 Z^{2}+6 Z -1, \mathit{index} =1\right)^{-n +2}}{18522575629258326851}-\frac{26426763110967448668 \mathit{RootOf} \left(4 Z^{10}+6 Z^{9}-16 Z^{8}-15 Z^{7}+19 Z^{6}+24 Z^{5}+4 Z^{4}-12 Z^{3}-6 Z^{2}+6 Z -1, \mathit{index} =2\right)^{-n +2}}{18522575629258326851}-\frac{26426763110967448668 \mathit{RootOf} \left(4 Z^{10}+6 Z^{9}-16 Z^{8}-15 Z^{7}+19 Z^{6}+24 Z^{5}+4 Z^{4}-12 Z^{3}-6 Z^{2}+6 Z -1, \mathit{index} =3\right)^{-n +2}}{18522575629258326851}-\frac{26426763110967448668 \mathit{RootOf} \left(4 Z^{10}+6 Z^{9}-16 Z^{8}-15 Z^{7}+19 Z^{6}+24 Z^{5}+4 Z^{4}-12 Z^{3}-6 Z^{2}+6 Z -1, \mathit{index} =4\right)^{-n +2}}{18522575629258326851}-\frac{26426763110967448668 \mathit{RootOf} \left(4 Z^{10}+6 Z^{9}-16 Z^{8}-15 Z^{7}+19 Z^{6}+24 Z^{5}+4 Z^{4}-12 Z^{3}-6 Z^{2}+6 Z -1, \mathit{index} =5\right)^{-n +2}}{18522575629258326851}-\frac{26426763110967448668 \mathit{RootOf} \left(4 Z^{10}+6 Z^{9}-16 Z^{8}-15 Z^{7}+19 Z^{6}+24 Z^{5}+4 Z^{4}-12 Z^{3}-6 Z^{2}+6 Z -1, \mathit{index} =6\right)^{-n +2}}{18522575629258326851}-\frac{26426763110967448668 \mathit{RootOf} \left(4 Z^{10}+6 Z^{9}-16 Z^{8}-15 Z^{7}+19 Z^{6}+24 Z^{5}+4 Z^{4}-12 Z^{3}-6 Z^{2}+6 Z -1, \mathit{index} =7\right)^{-n +2}}{18522575629258326851}-\frac{26426763110967448668 \mathit{RootOf} \left(4 Z^{10}+6 Z^{9}-16 Z^{8}-15 Z^{7}+19 Z^{6}+24 Z^{5}+4 Z^{4}-12 Z^{3}-6 Z^{2}+6 Z -1, \mathit{index} =8\right)^{-n +2}}{18522575629258326851}-\frac{26426763110967448668 \mathit{RootOf} \left(4 Z^{10}+6 Z^{9}-16 Z^{8}-15 Z^{7}+19 Z^{6}+24 Z^{5}+4 Z^{4}-12 Z^{3}-6 Z^{2}+6 Z -1, \mathit{index} =9\right)^{-n +2}}{18522575629258326851}-\frac{26426763110967448668 \mathit{RootOf} \left(4 Z^{10}+6 Z^{9}-16 Z^{8}-15 Z^{7}+19 Z^{6}+24 Z^{5}+4 Z^{4}-12 Z^{3}-6 Z^{2}+6 Z -1, \mathit{index} =10\right)^{-n +2}}{18522575629258326851}-\frac{2224835592751116873 \mathit{RootOf} \left(4 Z^{10}+6 Z^{9}-16 Z^{8}-15 Z^{7}+19 Z^{6}+24 Z^{5}+4 Z^{4}-12 Z^{3}-6 Z^{2}+6 Z -1, \mathit{index} =1\right)^{-n +1}}{18522575629258326851}-\frac{2224835592751116873 \mathit{RootOf} \left(4 Z^{10}+6 Z^{9}-16 Z^{8}-15 Z^{7}+19 Z^{6}+24 Z^{5}+4 Z^{4}-12 Z^{3}-6 Z^{2}+6 Z -1, \mathit{index} =2\right)^{-n +1}}{18522575629258326851}-\frac{2224835592751116873 \mathit{RootOf} \left(4 Z^{10}+6 Z^{9}-16 Z^{8}-15 Z^{7}+19 Z^{6}+24 Z^{5}+4 Z^{4}-12 Z^{3}-6 Z^{2}+6 Z -1, \mathit{index} =3\right)^{-n +1}}{18522575629258326851}-\frac{2224835592751116873 \mathit{RootOf} \left(4 Z^{10}+6 Z^{9}-16 Z^{8}-15 Z^{7}+19 Z^{6}+24 Z^{5}+4 Z^{4}-12 Z^{3}-6 Z^{2}+6 Z -1, \mathit{index} =4\right)^{-n +1}}{18522575629258326851}-\frac{2224835592751116873 \mathit{RootOf} \left(4 Z^{10}+6 Z^{9}-16 Z^{8}-15 Z^{7}+19 Z^{6}+24 Z^{5}+4 Z^{4}-12 Z^{3}-6 Z^{2}+6 Z -1, \mathit{index} =5\right)^{-n +1}}{18522575629258326851}-\frac{2224835592751116873 \mathit{RootOf} \left(4 Z^{10}+6 Z^{9}-16 Z^{8}-15 Z^{7}+19 Z^{6}+24 Z^{5}+4 Z^{4}-12 Z^{3}-6 Z^{2}+6 Z -1, \mathit{index} =6\right)^{-n +1}}{18522575629258326851}-\frac{2224835592751116873 \mathit{RootOf} \left(4 Z^{10}+6 Z^{9}-16 Z^{8}-15 Z^{7}+19 Z^{6}+24 Z^{5}+4 Z^{4}-12 Z^{3}-6 Z^{2}+6 Z -1, \mathit{index} =7\right)^{-n +1}}{18522575629258326851}-\frac{2224835592751116873 \mathit{RootOf} \left(4 Z^{10}+6 Z^{9}-16 Z^{8}-15 Z^{7}+19 Z^{6}+24 Z^{5}+4 Z^{4}-12 Z^{3}-6 Z^{2}+6 Z -1, \mathit{index} =8\right)^{-n +1}}{18522575629258326851}-\frac{2224835592751116873 \mathit{RootOf} \left(4 Z^{10}+6 Z^{9}-16 Z^{8}-15 Z^{7}+19 Z^{6}+24 Z^{5}+4 Z^{4}-12 Z^{3}-6 Z^{2}+6 Z -1, \mathit{index} =9\right)^{-n +1}}{18522575629258326851}-\frac{2224835592751116873 \mathit{RootOf} \left(4 Z^{10}+6 Z^{9}-16 Z^{8}-15 Z^{7}+19 Z^{6}+24 Z^{5}+4 Z^{4}-12 Z^{3}-6 Z^{2}+6 Z -1, \mathit{index} =10\right)^{-n +1}}{18522575629258326851}-\frac{1116722387793773659 \mathit{RootOf} \left(4 Z^{10}+6 Z^{9}-16 Z^{8}-15 Z^{7}+19 Z^{6}+24 Z^{5}+4 Z^{4}-12 Z^{3}-6 Z^{2}+6 Z -1, \mathit{index} =1\right)^{-n -1}}{18522575629258326851}-\frac{1116722387793773659 \mathit{RootOf} \left(4 Z^{10}+6 Z^{9}-16 Z^{8}-15 Z^{7}+19 Z^{6}+24 Z^{5}+4 Z^{4}-12 Z^{3}-6 Z^{2}+6 Z -1, \mathit{index} =2\right)^{-n -1}}{18522575629258326851}-\frac{1116722387793773659 \mathit{RootOf} \left(4 Z^{10}+6 Z^{9}-16 Z^{8}-15 Z^{7}+19 Z^{6}+24 Z^{5}+4 Z^{4}-12 Z^{3}-6 Z^{2}+6 Z -1, \mathit{index} =3\right)^{-n -1}}{18522575629258326851}-\frac{1116722387793773659 \mathit{RootOf} \left(4 Z^{10}+6 Z^{9}-16 Z^{8}-15 Z^{7}+19 Z^{6}+24 Z^{5}+4 Z^{4}-12 Z^{3}-6 Z^{2}+6 Z -1, \mathit{index} =4\right)^{-n -1}}{18522575629258326851}-\frac{1116722387793773659 \mathit{RootOf} \left(4 Z^{10}+6 Z^{9}-16 Z^{8}-15 Z^{7}+19 Z^{6}+24 Z^{5}+4 Z^{4}-12 Z^{3}-6 Z^{2}+6 Z -1, \mathit{index} =5\right)^{-n -1}}{18522575629258326851}-\frac{1116722387793773659 \mathit{RootOf} \left(4 Z^{10}+6 Z^{9}-16 Z^{8}-15 Z^{7}+19 Z^{6}+24 Z^{5}+4 Z^{4}-12 Z^{3}-6 Z^{2}+6 Z -1, \mathit{index} =6\right)^{-n -1}}{18522575629258326851}-\frac{1116722387793773659 \mathit{RootOf} \left(4 Z^{10}+6 Z^{9}-16 Z^{8}-15 Z^{7}+19 Z^{6}+24 Z^{5}+4 Z^{4}-12 Z^{3}-6 Z^{2}+6 Z -1, \mathit{index} =7\right)^{-n -1}}{18522575629258326851}-\frac{1116722387793773659 \mathit{RootOf} \left(4 Z^{10}+6 Z^{9}-16 Z^{8}-15 Z^{7}+19 Z^{6}+24 Z^{5}+4 Z^{4}-12 Z^{3}-6 Z^{2}+6 Z -1, \mathit{index} =8\right)^{-n -1}}{18522575629258326851}-\frac{1116722387793773659 \mathit{RootOf} \left(4 Z^{10}+6 Z^{9}-16 Z^{8}-15 Z^{7}+19 Z^{6}+24 Z^{5}+4 Z^{4}-12 Z^{3}-6 Z^{2}+6 Z -1, \mathit{index} =9\right)^{-n -1}}{18522575629258326851}-\frac{1116722387793773659 \mathit{RootOf} \left(4 Z^{10}+6 Z^{9}-16 Z^{8}-15 Z^{7}+19 Z^{6}+24 Z^{5}+4 Z^{4}-12 Z^{3}-6 Z^{2}+6 Z -1, \mathit{index} =10\right)^{-n -1}}{18522575629258326851}+\frac{10025654304568194868 \mathit{RootOf} \left(4 Z^{10}+6 Z^{9}-16 Z^{8}-15 Z^{7}+19 Z^{6}+24 Z^{5}+4 Z^{4}-12 Z^{3}-6 Z^{2}+6 Z -1, \mathit{index} =1\right)^{-n}}{18522575629258326851}+\frac{10025654304568194868 \mathit{RootOf} \left(4 Z^{10}+6 Z^{9}-16 Z^{8}-15 Z^{7}+19 Z^{6}+24 Z^{5}+4 Z^{4}-12 Z^{3}-6 Z^{2}+6 Z -1, \mathit{index} =2\right)^{-n}}{18522575629258326851}+\frac{10025654304568194868 \mathit{RootOf} \left(4 Z^{10}+6 Z^{9}-16 Z^{8}-15 Z^{7}+19 Z^{6}+24 Z^{5}+4 Z^{4}-12 Z^{3}-6 Z^{2}+6 Z -1, \mathit{index} =3\right)^{-n}}{18522575629258326851}+\frac{10025654304568194868 \mathit{RootOf} \left(4 Z^{10}+6 Z^{9}-16 Z^{8}-15 Z^{7}+19 Z^{6}+24 Z^{5}+4 Z^{4}-12 Z^{3}-6 Z^{2}+6 Z -1, \mathit{index} =4\right)^{-n}}{18522575629258326851}+\frac{10025654304568194868 \mathit{RootOf} \left(4 Z^{10}+6 Z^{9}-16 Z^{8}-15 Z^{7}+19 Z^{6}+24 Z^{5}+4 Z^{4}-12 Z^{3}-6 Z^{2}+6 Z -1, \mathit{index} =5\right)^{-n}}{18522575629258326851}+\frac{10025654304568194868 \mathit{RootOf} \left(4 Z^{10}+6 Z^{9}-16 Z^{8}-15 Z^{7}+19 Z^{6}+24 Z^{5}+4 Z^{4}-12 Z^{3}-6 Z^{2}+6 Z -1, \mathit{index} =6\right)^{-n}}{18522575629258326851}+\frac{10025654304568194868 \mathit{RootOf} \left(4 Z^{10}+6 Z^{9}-16 Z^{8}-15 Z^{7}+19 Z^{6}+24 Z^{5}+4 Z^{4}-12 Z^{3}-6 Z^{2}+6 Z -1, \mathit{index} =7\right)^{-n}}{18522575629258326851}+\frac{10025654304568194868 \mathit{RootOf} \left(4 Z^{10}+6 Z^{9}-16 Z^{8}-15 Z^{7}+19 Z^{6}+24 Z^{5}+4 Z^{4}-12 Z^{3}-6 Z^{2}+6 Z -1, \mathit{index} =8\right)^{-n}}{18522575629258326851}+\frac{10025654304568194868 \mathit{RootOf} \left(4 Z^{10}+6 Z^{9}-16 Z^{8}-15 Z^{7}+19 Z^{6}+24 Z^{5}+4 Z^{4}-12 Z^{3}-6 Z^{2}+6 Z -1, \mathit{index} =9\right)^{-n}}{18522575629258326851}+\frac{10025654304568194868 \mathit{RootOf} \left(4 Z^{10}+6 Z^{9}-16 Z^{8}-15 Z^{7}+19 Z^{6}+24 Z^{5}+4 Z^{4}-12 Z^{3}-6 Z^{2}+6 Z -1, \mathit{index} =10\right)^{-n}}{18522575629258326851}+\frac{10707697567865117688 \mathit{RootOf} \left(4 Z^{10}+6 Z^{9}-16 Z^{8}-15 Z^{7}+19 Z^{6}+24 Z^{5}+4 Z^{4}-12 Z^{3}-6 Z^{2}+6 Z -1, \mathit{index} =1\right)^{-n +6}}{18522575629258326851}+\frac{10707697567865117688 \mathit{RootOf} \left(4 Z^{10}+6 Z^{9}-16 Z^{8}-15 Z^{7}+19 Z^{6}+24 Z^{5}+4 Z^{4}-12 Z^{3}-6 Z^{2}+6 Z -1, \mathit{index} =2\right)^{-n +6}}{18522575629258326851}+\frac{10707697567865117688 \mathit{RootOf} \left(4 Z^{10}+6 Z^{9}-16 Z^{8}-15 Z^{7}+19 Z^{6}+24 Z^{5}+4 Z^{4}-12 Z^{3}-6 Z^{2}+6 Z -1, \mathit{index} =3\right)^{-n +6}}{18522575629258326851}+\frac{10707697567865117688 \mathit{RootOf} \left(4 Z^{10}+6 Z^{9}-16 Z^{8}-15 Z^{7}+19 Z^{6}+24 Z^{5}+4 Z^{4}-12 Z^{3}-6 Z^{2}+6 Z -1, \mathit{index} =4\right)^{-n +6}}{18522575629258326851}+\frac{10707697567865117688 \mathit{RootOf} \left(4 Z^{10}+6 Z^{9}-16 Z^{8}-15 Z^{7}+19 Z^{6}+24 Z^{5}+4 Z^{4}-12 Z^{3}-6 Z^{2}+6 Z -1, \mathit{index} =5\right)^{-n +6}}{18522575629258326851}+\frac{10707697567865117688 \mathit{RootOf} \left(4 Z^{10}+6 Z^{9}-16 Z^{8}-15 Z^{7}+19 Z^{6}+24 Z^{5}+4 Z^{4}-12 Z^{3}-6 Z^{2}+6 Z -1, \mathit{index} =6\right)^{-n +6}}{18522575629258326851}+\frac{10707697567865117688 \mathit{RootOf} \left(4 Z^{10}+6 Z^{9}-16 Z^{8}-15 Z^{7}+19 Z^{6}+24 Z^{5}+4 Z^{4}-12 Z^{3}-6 Z^{2}+6 Z -1, \mathit{index} =7\right)^{-n +6}}{18522575629258326851}+\frac{10707697567865117688 \mathit{RootOf} \left(4 Z^{10}+6 Z^{9}-16 Z^{8}-15 Z^{7}+19 Z^{6}+24 Z^{5}+4 Z^{4}-12 Z^{3}-6 Z^{2}+6 Z -1, \mathit{index} =8\right)^{-n +6}}{18522575629258326851}+\frac{10707697567865117688 \mathit{RootOf} \left(4 Z^{10}+6 Z^{9}-16 Z^{8}-15 Z^{7}+19 Z^{6}+24 Z^{5}+4 Z^{4}-12 Z^{3}-6 Z^{2}+6 Z -1, \mathit{index} =9\right)^{-n +6}}{18522575629258326851}+\frac{10707697567865117688 \mathit{RootOf} \left(4 Z^{10}+6 Z^{9}-16 Z^{8}-15 Z^{7}+19 Z^{6}+24 Z^{5}+4 Z^{4}-12 Z^{3}-6 Z^{2}+6 Z -1, \mathit{index} =10\right)^{-n +6}}{18522575629258326851}-\frac{10047081610420869108 \mathit{RootOf} \left(4 Z^{10}+6 Z^{9}-16 Z^{8}-15 Z^{7}+19 Z^{6}+24 Z^{5}+4 Z^{4}-12 Z^{3}-6 Z^{2}+6 Z -1, \mathit{index} =1\right)^{-n +7}}{18522575629258326851}-\frac{10047081610420869108 \mathit{RootOf} \left(4 Z^{10}+6 Z^{9}-16 Z^{8}-15 Z^{7}+19 Z^{6}+24 Z^{5}+4 Z^{4}-12 Z^{3}-6 Z^{2}+6 Z -1, \mathit{index} =2\right)^{-n +7}}{18522575629258326851}-\frac{10047081610420869108 \mathit{RootOf} \left(4 Z^{10}+6 Z^{9}-16 Z^{8}-15 Z^{7}+19 Z^{6}+24 Z^{5}+4 Z^{4}-12 Z^{3}-6 Z^{2}+6 Z -1, \mathit{index} =3\right)^{-n +7}}{18522575629258326851}-\frac{10047081610420869108 \mathit{RootOf} \left(4 Z^{10}+6 Z^{9}-16 Z^{8}-15 Z^{7}+19 Z^{6}+24 Z^{5}+4 Z^{4}-12 Z^{3}-6 Z^{2}+6 Z -1, \mathit{index} =4\right)^{-n +7}}{18522575629258326851}-\frac{10047081610420869108 \mathit{RootOf} \left(4 Z^{10}+6 Z^{9}-16 Z^{8}-15 Z^{7}+19 Z^{6}+24 Z^{5}+4 Z^{4}-12 Z^{3}-6 Z^{2}+6 Z -1, \mathit{index} =5\right)^{-n +7}}{18522575629258326851}-\frac{10047081610420869108 \mathit{RootOf} \left(4 Z^{10}+6 Z^{9}-16 Z^{8}-15 Z^{7}+19 Z^{6}+24 Z^{5}+4 Z^{4}-12 Z^{3}-6 Z^{2}+6 Z -1, \mathit{index} =6\right)^{-n +7}}{18522575629258326851}-\frac{10047081610420869108 \mathit{RootOf} \left(4 Z^{10}+6 Z^{9}-16 Z^{8}-15 Z^{7}+19 Z^{6}+24 Z^{5}+4 Z^{4}-12 Z^{3}-6 Z^{2}+6 Z -1, \mathit{index} =7\right)^{-n +7}}{18522575629258326851}-\frac{10047081610420869108 \mathit{RootOf} \left(4 Z^{10}+6 Z^{9}-16 Z^{8}-15 Z^{7}+19 Z^{6}+24 Z^{5}+4 Z^{4}-12 Z^{3}-6 Z^{2}+6 Z -1, \mathit{index} =8\right)^{-n +7}}{18522575629258326851}-\frac{10047081610420869108 \mathit{RootOf} \left(4 Z^{10}+6 Z^{9}-16 Z^{8}-15 Z^{7}+19 Z^{6}+24 Z^{5}+4 Z^{4}-12 Z^{3}-6 Z^{2}+6 Z -1, \mathit{index} =9\right)^{-n +7}}{18522575629258326851}-\frac{10047081610420869108 \mathit{RootOf} \left(4 Z^{10}+6 Z^{9}-16 Z^{8}-15 Z^{7}+19 Z^{6}+24 Z^{5}+4 Z^{4}-12 Z^{3}-6 Z^{2}+6 Z -1, \mathit{index} =10\right)^{-n +7}}{18522575629258326851}-\frac{4350729137558978584 \mathit{RootOf} \left(4 Z^{10}+6 Z^{9}-16 Z^{8}-15 Z^{7}+19 Z^{6}+24 Z^{5}+4 Z^{4}-12 Z^{3}-6 Z^{2}+6 Z -1, \mathit{index} =1\right)^{-n +8}}{18522575629258326851}-\frac{4350729137558978584 \mathit{RootOf} \left(4 Z^{10}+6 Z^{9}-16 Z^{8}-15 Z^{7}+19 Z^{6}+24 Z^{5}+4 Z^{4}-12 Z^{3}-6 Z^{2}+6 Z -1, \mathit{index} =2\right)^{-n +8}}{18522575629258326851}-\frac{4350729137558978584 \mathit{RootOf} \left(4 Z^{10}+6 Z^{9}-16 Z^{8}-15 Z^{7}+19 Z^{6}+24 Z^{5}+4 Z^{4}-12 Z^{3}-6 Z^{2}+6 Z -1, \mathit{index} =3\right)^{-n +8}}{18522575629258326851}-\frac{4350729137558978584 \mathit{RootOf} \left(4 Z^{10}+6 Z^{9}-16 Z^{8}-15 Z^{7}+19 Z^{6}+24 Z^{5}+4 Z^{4}-12 Z^{3}-6 Z^{2}+6 Z -1, \mathit{index} =4\right)^{-n +8}}{18522575629258326851}-\frac{4350729137558978584 \mathit{RootOf} \left(4 Z^{10}+6 Z^{9}-16 Z^{8}-15 Z^{7}+19 Z^{6}+24 Z^{5}+4 Z^{4}-12 Z^{3}-6 Z^{2}+6 Z -1, \mathit{index} =5\right)^{-n +8}}{18522575629258326851}-\frac{4350729137558978584 \mathit{RootOf} \left(4 Z^{10}+6 Z^{9}-16 Z^{8}-15 Z^{7}+19 Z^{6}+24 Z^{5}+4 Z^{4}-12 Z^{3}-6 Z^{2}+6 Z -1, \mathit{index} =6\right)^{-n +8}}{18522575629258326851}-\frac{4350729137558978584 \mathit{RootOf} \left(4 Z^{10}+6 Z^{9}-16 Z^{8}-15 Z^{7}+19 Z^{6}+24 Z^{5}+4 Z^{4}-12 Z^{3}-6 Z^{2}+6 Z -1, \mathit{index} =7\right)^{-n +8}}{18522575629258326851}-\frac{4350729137558978584 \mathit{RootOf} \left(4 Z^{10}+6 Z^{9}-16 Z^{8}-15 Z^{7}+19 Z^{6}+24 Z^{5}+4 Z^{4}-12 Z^{3}-6 Z^{2}+6 Z -1, \mathit{index} =8\right)^{-n +8}}{18522575629258326851}-\frac{4350729137558978584 \mathit{RootOf} \left(4 Z^{10}+6 Z^{9}-16 Z^{8}-15 Z^{7}+19 Z^{6}+24 Z^{5}+4 Z^{4}-12 Z^{3}-6 Z^{2}+6 Z -1, \mathit{index} =9\right)^{-n +8}}{18522575629258326851}-\frac{4350729137558978584 \mathit{RootOf} \left(4 Z^{10}+6 Z^{9}-16 Z^{8}-15 Z^{7}+19 Z^{6}+24 Z^{5}+4 Z^{4}-12 Z^{3}-6 Z^{2}+6 Z -1, \mathit{index} =10\right)^{-n +8}}{18522575629258326851}\)
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This specification was found using the strategy pack "Regular Insertion Encoding Left" and has 131 rules.

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\(\begin{align*} F_{0}\! \left(x \right) &= F_{1}\! \left(x \right)+F_{2}\! \left(x \right)\\ F_{1}\! \left(x \right) &= 1\\ F_{2}\! \left(x \right) &= F_{3}\! \left(x \right)\\ F_{3}\! \left(x \right) &= F_{20}\! \left(x \right) F_{4}\! \left(x \right)\\ F_{4}\! \left(x \right) &= F_{0}\! \left(x \right)+F_{5}\! \left(x \right)\\ F_{5}\! \left(x \right) &= F_{27}\! \left(x \right)+F_{6}\! \left(x \right)\\ F_{6}\! \left(x \right) &= F_{7}\! \left(x \right)\\ F_{7}\! \left(x \right) &= F_{20}\! \left(x \right) F_{8}\! \left(x \right)\\ F_{8}\! \left(x \right) &= F_{10}\! \left(x \right)+F_{9}\! \left(x \right)\\ F_{9}\! \left(x \right) &= F_{1}\! \left(x \right)+F_{6}\! \left(x \right)\\ F_{10}\! \left(x \right) &= F_{11}\! \left(x \right)+F_{6}\! \left(x \right)\\ F_{11}\! \left(x \right) &= F_{12}\! \left(x \right)+F_{13}\! \left(x \right)+F_{21}\! \left(x \right)\\ F_{12}\! \left(x \right) &= 0\\ F_{13}\! \left(x \right) &= F_{14}\! \left(x \right) F_{20}\! \left(x \right)\\ F_{14}\! \left(x \right) &= F_{15}\! \left(x \right)\\ F_{15}\! \left(x \right) &= F_{16}\! \left(x \right)+F_{6}\! \left(x \right)\\ F_{16}\! \left(x \right) &= F_{17}\! \left(x \right)\\ F_{17}\! \left(x \right) &= F_{18}\! \left(x \right) F_{20}\! \left(x \right)\\ F_{18}\! \left(x \right) &= F_{19}\! \left(x \right)\\ F_{19}\! \left(x \right) &= F_{6}\! \left(x \right)\\ F_{20}\! \left(x \right) &= x\\ F_{21}\! \left(x \right) &= F_{20}\! \left(x \right) F_{22}\! \left(x \right)\\ F_{22}\! \left(x \right) &= F_{19}\! \left(x \right)+F_{23}\! \left(x \right)\\ F_{23}\! \left(x \right) &= F_{24}\! \left(x \right)\\ F_{24}\! \left(x \right) &= F_{25}\! \left(x \right)\\ F_{25}\! \left(x \right) &= F_{20}\! \left(x \right) F_{26}\! \left(x \right)\\ F_{26}\! \left(x \right) &= F_{6}\! \left(x \right)\\ F_{27}\! \left(x \right) &= F_{113}\! \left(x \right)+F_{12}\! \left(x \right)+F_{28}\! \left(x \right)\\ F_{28}\! \left(x \right) &= F_{20}\! \left(x \right) F_{29}\! \left(x \right)\\ F_{29}\! \left(x \right) &= F_{30}\! \left(x \right)+F_{31}\! \left(x \right)\\ F_{30}\! \left(x \right) &= F_{2}\! \left(x \right)+F_{27}\! \left(x \right)\\ F_{31}\! \left(x \right) &= F_{32}\! \left(x \right)+F_{82}\! \left(x \right)\\ F_{32}\! \left(x \right) &= F_{12}\! \left(x \right)+F_{33}\! \left(x \right)+F_{79}\! \left(x \right)\\ F_{33}\! \left(x \right) &= F_{20}\! \left(x \right) F_{34}\! \left(x \right)\\ F_{34}\! \left(x \right) &= F_{35}\! \left(x \right)+F_{36}\! \left(x \right)\\ F_{35}\! \left(x \right) &= F_{2}\! \left(x \right)+F_{32}\! \left(x \right)\\ F_{36}\! \left(x \right) &= F_{32}\! \left(x \right)+F_{37}\! \left(x \right)\\ F_{37}\! \left(x \right) &= F_{12}\! \left(x \right)+F_{38}\! \left(x \right)+F_{67}\! \left(x \right)+F_{76}\! \left(x \right)\\ F_{38}\! \left(x \right) &= F_{20}\! \left(x \right) F_{39}\! \left(x \right)\\ F_{39}\! \left(x \right) &= F_{40}\! \left(x \right)\\ F_{40}\! \left(x \right) &= F_{32}\! \left(x \right)+F_{41}\! \left(x \right)\\ F_{41}\! \left(x \right) &= 2 F_{12}\! \left(x \right)+F_{42}\! \left(x \right)+F_{45}\! \left(x \right)\\ F_{42}\! \left(x \right) &= F_{20}\! \left(x \right) F_{43}\! \left(x \right)\\ F_{43}\! \left(x \right) &= F_{44}\! \left(x \right)\\ F_{44}\! \left(x \right) &= F_{32}\! \left(x \right)\\ F_{45}\! \left(x \right) &= F_{20}\! \left(x \right) F_{46}\! \left(x \right)\\ F_{46}\! \left(x \right) &= F_{47}\! \left(x \right)\\ F_{47}\! \left(x \right) &= F_{16}\! \left(x \right)+F_{48}\! \left(x \right)\\ F_{48}\! \left(x \right) &= F_{49}\! \left(x \right)\\ F_{49}\! \left(x \right) &= F_{20}\! \left(x \right) F_{50}\! \left(x \right)\\ F_{50}\! \left(x \right) &= F_{51}\! \left(x \right)\\ F_{51}\! \left(x \right) &= F_{52}\! \left(x \right)\\ F_{52}\! \left(x \right) &= F_{53}\! \left(x \right)\\ F_{53}\! \left(x \right) &= F_{20}\! \left(x \right) F_{54}\! \left(x \right)\\ F_{54}\! \left(x \right) &= F_{55}\! \left(x \right)+F_{56}\! \left(x \right)\\ F_{55}\! \left(x \right) &= F_{2}\! \left(x \right)+F_{52}\! \left(x \right)\\ F_{56}\! \left(x \right) &= F_{52}\! \left(x \right)+F_{57}\! \left(x \right)\\ F_{57}\! \left(x \right) &= 2 F_{12}\! \left(x \right)+F_{58}\! \left(x \right)+F_{61}\! \left(x \right)\\ F_{58}\! \left(x \right) &= F_{20}\! \left(x \right) F_{59}\! \left(x \right)\\ F_{59}\! \left(x \right) &= F_{60}\! \left(x \right)\\ F_{60}\! \left(x \right) &= F_{48}\! \left(x \right)+F_{52}\! \left(x \right)\\ F_{61}\! \left(x \right) &= F_{20}\! \left(x \right) F_{62}\! \left(x \right)\\ F_{62}\! \left(x \right) &= F_{51}\! \left(x \right)+F_{63}\! \left(x \right)\\ F_{63}\! \left(x \right) &= F_{64}\! \left(x \right)\\ F_{64}\! \left(x \right) &= F_{65}\! \left(x \right)\\ F_{65}\! \left(x \right) &= F_{20}\! \left(x \right) F_{66}\! \left(x \right)\\ F_{66}\! \left(x \right) &= F_{52}\! \left(x \right)\\ F_{67}\! \left(x \right) &= F_{20}\! \left(x \right) F_{68}\! \left(x \right)\\ F_{68}\! \left(x \right) &= F_{44}\! \left(x \right)+F_{69}\! \left(x \right)\\ F_{69}\! \left(x \right) &= F_{70}\! \left(x \right)\\ F_{70}\! \left(x \right) &= 2 F_{12}\! \left(x \right)+F_{71}\! \left(x \right)+F_{73}\! \left(x \right)\\ F_{71}\! \left(x \right) &= F_{20}\! \left(x \right) F_{72}\! \left(x \right)\\ F_{72}\! \left(x \right) &= F_{32}\! \left(x \right)\\ F_{73}\! \left(x \right) &= F_{20}\! \left(x \right) F_{74}\! \left(x \right)\\ F_{74}\! \left(x \right) &= F_{75}\! \left(x \right)\\ F_{75}\! \left(x \right) &= F_{24}\! \left(x \right)+F_{64}\! \left(x \right)\\ F_{76}\! \left(x \right) &= F_{20}\! \left(x \right) F_{77}\! \left(x \right)\\ F_{77}\! \left(x \right) &= F_{78}\! \left(x \right)\\ F_{78}\! \left(x \right) &= F_{11}\! \left(x \right)+F_{57}\! \left(x \right)\\ F_{79}\! \left(x \right) &= F_{20}\! \left(x \right) F_{80}\! \left(x \right)\\ F_{80}\! \left(x \right) &= F_{81}\! \left(x \right)\\ F_{81}\! \left(x \right) &= F_{52}\! \left(x \right)+F_{6}\! \left(x \right)\\ F_{82}\! \left(x \right) &= F_{100}\! \left(x \right)+F_{12}\! \left(x \right)+F_{83}\! \left(x \right)+F_{97}\! \left(x \right)\\ F_{83}\! \left(x \right) &= F_{20}\! \left(x \right) F_{84}\! \left(x \right)\\ F_{84}\! \left(x \right) &= F_{85}\! \left(x \right)\\ F_{85}\! \left(x \right) &= F_{27}\! \left(x \right)+F_{86}\! \left(x \right)\\ F_{86}\! \left(x \right) &= 2 F_{12}\! \left(x \right)+F_{87}\! \left(x \right)+F_{90}\! \left(x \right)\\ F_{87}\! \left(x \right) &= F_{20}\! \left(x \right) F_{88}\! \left(x \right)\\ F_{88}\! \left(x \right) &= F_{89}\! \left(x \right)\\ F_{89}\! \left(x \right) &= F_{32}\! \left(x \right)\\ F_{90}\! \left(x \right) &= F_{20}\! \left(x \right) F_{91}\! \left(x \right)\\ F_{91}\! \left(x \right) &= F_{92}\! \left(x \right)\\ F_{92}\! \left(x \right) &= F_{16}\! \left(x \right)+F_{93}\! \left(x \right)\\ F_{93}\! \left(x \right) &= F_{94}\! \left(x \right)\\ F_{94}\! \left(x \right) &= F_{20}\! \left(x \right) F_{95}\! \left(x \right)\\ F_{95}\! \left(x \right) &= F_{96}\! \left(x \right)\\ F_{96}\! \left(x \right) &= F_{52}\! \left(x \right)\\ F_{97}\! \left(x \right) &= F_{20}\! \left(x \right) F_{98}\! \left(x \right)\\ F_{98}\! \left(x \right) &= F_{89}\! \left(x \right)+F_{99}\! \left(x \right)\\ F_{99}\! \left(x \right) &= F_{70}\! \left(x \right)\\ F_{100}\! \left(x \right) &= F_{101}\! \left(x \right) F_{20}\! \left(x \right)\\ F_{101}\! \left(x \right) &= F_{102}\! \left(x \right)\\ F_{102}\! \left(x \right) &= F_{103}\! \left(x \right)+F_{11}\! \left(x \right)\\ F_{103}\! \left(x \right) &= 2 F_{12}\! \left(x \right)+F_{104}\! \left(x \right)+F_{107}\! \left(x \right)\\ F_{104}\! \left(x \right) &= F_{105}\! \left(x \right) F_{20}\! \left(x \right)\\ F_{105}\! \left(x \right) &= F_{106}\! \left(x \right)\\ F_{106}\! \left(x \right) &= F_{32}\! \left(x \right)+F_{93}\! \left(x \right)\\ F_{107}\! \left(x \right) &= F_{108}\! \left(x \right) F_{20}\! \left(x \right)\\ F_{108}\! \left(x \right) &= F_{109}\! \left(x \right)+F_{96}\! \left(x \right)\\ F_{109}\! \left(x \right) &= F_{110}\! \left(x \right)\\ F_{110}\! \left(x \right) &= F_{111}\! \left(x \right)\\ F_{111}\! \left(x \right) &= F_{112}\! \left(x \right) F_{20}\! \left(x \right)\\ F_{112}\! \left(x \right) &= F_{32}\! \left(x \right)\\ F_{113}\! \left(x \right) &= F_{114}\! \left(x \right) F_{20}\! \left(x \right)\\ F_{114}\! \left(x \right) &= F_{115}\! \left(x \right)+F_{116}\! \left(x \right)\\ F_{115}\! \left(x \right) &= F_{32}\! \left(x \right)+F_{6}\! \left(x \right)\\ F_{116}\! \left(x \right) &= F_{11}\! \left(x \right)+F_{117}\! \left(x \right)\\ F_{117}\! \left(x \right) &= F_{118}\! \left(x \right)+F_{12}\! \left(x \right)+F_{125}\! \left(x \right)+F_{128}\! \left(x \right)\\ F_{118}\! \left(x \right) &= F_{119}\! \left(x \right) F_{20}\! \left(x \right)\\ F_{119}\! \left(x \right) &= F_{120}\! \left(x \right)\\ F_{120}\! \left(x \right) &= F_{121}\! \left(x \right)+F_{27}\! \left(x \right)\\ F_{121}\! \left(x \right) &= F_{122}\! \left(x \right)\\ F_{122}\! \left(x \right) &= F_{123}\! \left(x \right) F_{20}\! \left(x \right)\\ F_{123}\! \left(x \right) &= F_{124}\! \left(x \right)\\ F_{124}\! \left(x \right) &= F_{52}\! \left(x \right)\\ F_{125}\! \left(x \right) &= F_{126}\! \left(x \right) F_{20}\! \left(x \right)\\ F_{126}\! \left(x \right) &= F_{124}\! \left(x \right)+F_{127}\! \left(x \right)\\ F_{127}\! \left(x \right) &= F_{110}\! \left(x \right)\\ F_{128}\! \left(x \right) &= F_{129}\! \left(x \right) F_{20}\! \left(x \right)\\ F_{129}\! \left(x \right) &= F_{130}\! \left(x \right)\\ F_{130}\! \left(x \right) &= F_{110}\! \left(x \right)+F_{24}\! \left(x \right)\\ \end{align*}\)