Av(1234, 1324, 1432, 3214)
Generating Function
\(\displaystyle -\frac{x^{3}+x^{2}+x -1}{\left(x +1\right) \left(7 x^{8}+7 x^{7}+8 x^{6}-8 x^{5}-4 x^{3}+2 x^{2}-3 x +1\right)}\)
Counting Sequence
1, 1, 2, 6, 20, 62, 172, 471, 1337, 3846, 11030, 31442, 89470, 254934, 727203, ...
Implicit Equation for the Generating Function
\(\displaystyle \left(x +1\right) \left(7 x^{8}+7 x^{7}+8 x^{6}-8 x^{5}-4 x^{3}+2 x^{2}-3 x +1\right) F \! \left(x \right)+x^{3}+x^{2}+x -1 = 0\)
Recurrence
\(\displaystyle a \! \left(0\right) = 1\)
\(\displaystyle a \! \left(1\right) = 1\)
\(\displaystyle a \! \left(2\right) = 2\)
\(\displaystyle a \! \left(3\right) = 6\)
\(\displaystyle a \! \left(4\right) = 20\)
\(\displaystyle a \! \left(5\right) = 62\)
\(\displaystyle a \! \left(6\right) = 172\)
\(\displaystyle a \! \left(7\right) = 471\)
\(\displaystyle a \! \left(8\right) = 1337\)
\(\displaystyle a \! \left(n +2\right) = -\frac{7 a \! \left(n \right)}{15}-\frac{14 a \! \left(n +1\right)}{15}+\frac{8 a \! \left(n +4\right)}{15}+\frac{4 a \! \left(n +5\right)}{15}+\frac{2 a \! \left(n +6\right)}{15}+\frac{a \! \left(n +7\right)}{15}+\frac{2 a \! \left(n +8\right)}{15}-\frac{a \! \left(n +9\right)}{15}, \quad n \geq 9\)
\(\displaystyle a \! \left(1\right) = 1\)
\(\displaystyle a \! \left(2\right) = 2\)
\(\displaystyle a \! \left(3\right) = 6\)
\(\displaystyle a \! \left(4\right) = 20\)
\(\displaystyle a \! \left(5\right) = 62\)
\(\displaystyle a \! \left(6\right) = 172\)
\(\displaystyle a \! \left(7\right) = 471\)
\(\displaystyle a \! \left(8\right) = 1337\)
\(\displaystyle a \! \left(n +2\right) = -\frac{7 a \! \left(n \right)}{15}-\frac{14 a \! \left(n +1\right)}{15}+\frac{8 a \! \left(n +4\right)}{15}+\frac{4 a \! \left(n +5\right)}{15}+\frac{2 a \! \left(n +6\right)}{15}+\frac{a \! \left(n +7\right)}{15}+\frac{2 a \! \left(n +8\right)}{15}-\frac{a \! \left(n +9\right)}{15}, \quad n \geq 9\)
Explicit Closed Form
\(\displaystyle -\frac{827572547366719 \mathit{RootOf} \left(7 Z^{8}+7 Z^{7}+8 Z^{6}-8 Z^{5}-4 Z^{3}+2 Z^{2}-3 Z +1, \mathit{index} =1\right)^{-n +7}}{12452220368504332}-\frac{827572547366719 \mathit{RootOf} \left(7 Z^{8}+7 Z^{7}+8 Z^{6}-8 Z^{5}-4 Z^{3}+2 Z^{2}-3 Z +1, \mathit{index} =2\right)^{-n +7}}{12452220368504332}-\frac{827572547366719 \mathit{RootOf} \left(7 Z^{8}+7 Z^{7}+8 Z^{6}-8 Z^{5}-4 Z^{3}+2 Z^{2}-3 Z +1, \mathit{index} =3\right)^{-n +7}}{12452220368504332}-\frac{827572547366719 \mathit{RootOf} \left(7 Z^{8}+7 Z^{7}+8 Z^{6}-8 Z^{5}-4 Z^{3}+2 Z^{2}-3 Z +1, \mathit{index} =4\right)^{-n +7}}{12452220368504332}-\frac{827572547366719 \mathit{RootOf} \left(7 Z^{8}+7 Z^{7}+8 Z^{6}-8 Z^{5}-4 Z^{3}+2 Z^{2}-3 Z +1, \mathit{index} =5\right)^{-n +7}}{12452220368504332}-\frac{827572547366719 \mathit{RootOf} \left(7 Z^{8}+7 Z^{7}+8 Z^{6}-8 Z^{5}-4 Z^{3}+2 Z^{2}-3 Z +1, \mathit{index} =6\right)^{-n +7}}{12452220368504332}-\frac{827572547366719 \mathit{RootOf} \left(7 Z^{8}+7 Z^{7}+8 Z^{6}-8 Z^{5}-4 Z^{3}+2 Z^{2}-3 Z +1, \mathit{index} =7\right)^{-n +7}}{12452220368504332}-\frac{827572547366719 \mathit{RootOf} \left(7 Z^{8}+7 Z^{7}+8 Z^{6}-8 Z^{5}-4 Z^{3}+2 Z^{2}-3 Z +1, \mathit{index} =8\right)^{-n +7}}{12452220368504332}-\frac{2583105803268235 \mathit{RootOf} \left(7 Z^{8}+7 Z^{7}+8 Z^{6}-8 Z^{5}-4 Z^{3}+2 Z^{2}-3 Z +1, \mathit{index} =1\right)^{-n +6}}{12452220368504332}-\frac{2583105803268235 \mathit{RootOf} \left(7 Z^{8}+7 Z^{7}+8 Z^{6}-8 Z^{5}-4 Z^{3}+2 Z^{2}-3 Z +1, \mathit{index} =2\right)^{-n +6}}{12452220368504332}-\frac{2583105803268235 \mathit{RootOf} \left(7 Z^{8}+7 Z^{7}+8 Z^{6}-8 Z^{5}-4 Z^{3}+2 Z^{2}-3 Z +1, \mathit{index} =3\right)^{-n +6}}{12452220368504332}-\frac{2583105803268235 \mathit{RootOf} \left(7 Z^{8}+7 Z^{7}+8 Z^{6}-8 Z^{5}-4 Z^{3}+2 Z^{2}-3 Z +1, \mathit{index} =4\right)^{-n +6}}{12452220368504332}-\frac{2583105803268235 \mathit{RootOf} \left(7 Z^{8}+7 Z^{7}+8 Z^{6}-8 Z^{5}-4 Z^{3}+2 Z^{2}-3 Z +1, \mathit{index} =5\right)^{-n +6}}{12452220368504332}-\frac{2583105803268235 \mathit{RootOf} \left(7 Z^{8}+7 Z^{7}+8 Z^{6}-8 Z^{5}-4 Z^{3}+2 Z^{2}-3 Z +1, \mathit{index} =6\right)^{-n +6}}{12452220368504332}-\frac{2583105803268235 \mathit{RootOf} \left(7 Z^{8}+7 Z^{7}+8 Z^{6}-8 Z^{5}-4 Z^{3}+2 Z^{2}-3 Z +1, \mathit{index} =7\right)^{-n +6}}{12452220368504332}-\frac{2583105803268235 \mathit{RootOf} \left(7 Z^{8}+7 Z^{7}+8 Z^{6}-8 Z^{5}-4 Z^{3}+2 Z^{2}-3 Z +1, \mathit{index} =8\right)^{-n +6}}{12452220368504332}-\frac{1788050310971779 \mathit{RootOf} \left(7 Z^{8}+7 Z^{7}+8 Z^{6}-8 Z^{5}-4 Z^{3}+2 Z^{2}-3 Z +1, \mathit{index} =1\right)^{-n +5}}{6226110184252166}-\frac{1788050310971779 \mathit{RootOf} \left(7 Z^{8}+7 Z^{7}+8 Z^{6}-8 Z^{5}-4 Z^{3}+2 Z^{2}-3 Z +1, \mathit{index} =2\right)^{-n +5}}{6226110184252166}-\frac{1788050310971779 \mathit{RootOf} \left(7 Z^{8}+7 Z^{7}+8 Z^{6}-8 Z^{5}-4 Z^{3}+2 Z^{2}-3 Z +1, \mathit{index} =3\right)^{-n +5}}{6226110184252166}-\frac{1788050310971779 \mathit{RootOf} \left(7 Z^{8}+7 Z^{7}+8 Z^{6}-8 Z^{5}-4 Z^{3}+2 Z^{2}-3 Z +1, \mathit{index} =4\right)^{-n +5}}{6226110184252166}-\frac{1788050310971779 \mathit{RootOf} \left(7 Z^{8}+7 Z^{7}+8 Z^{6}-8 Z^{5}-4 Z^{3}+2 Z^{2}-3 Z +1, \mathit{index} =5\right)^{-n +5}}{6226110184252166}-\frac{1788050310971779 \mathit{RootOf} \left(7 Z^{8}+7 Z^{7}+8 Z^{6}-8 Z^{5}-4 Z^{3}+2 Z^{2}-3 Z +1, \mathit{index} =6\right)^{-n +5}}{6226110184252166}-\frac{1788050310971779 \mathit{RootOf} \left(7 Z^{8}+7 Z^{7}+8 Z^{6}-8 Z^{5}-4 Z^{3}+2 Z^{2}-3 Z +1, \mathit{index} =7\right)^{-n +5}}{6226110184252166}-\frac{1788050310971779 \mathit{RootOf} \left(7 Z^{8}+7 Z^{7}+8 Z^{6}-8 Z^{5}-4 Z^{3}+2 Z^{2}-3 Z +1, \mathit{index} =8\right)^{-n +5}}{6226110184252166}-\frac{1194584782389937 \mathit{RootOf} \left(7 Z^{8}+7 Z^{7}+8 Z^{6}-8 Z^{5}-4 Z^{3}+2 Z^{2}-3 Z +1, \mathit{index} =1\right)^{-n +4}}{6226110184252166}-\frac{1194584782389937 \mathit{RootOf} \left(7 Z^{8}+7 Z^{7}+8 Z^{6}-8 Z^{5}-4 Z^{3}+2 Z^{2}-3 Z +1, \mathit{index} =2\right)^{-n +4}}{6226110184252166}-\frac{1194584782389937 \mathit{RootOf} \left(7 Z^{8}+7 Z^{7}+8 Z^{6}-8 Z^{5}-4 Z^{3}+2 Z^{2}-3 Z +1, \mathit{index} =3\right)^{-n +4}}{6226110184252166}-\frac{1194584782389937 \mathit{RootOf} \left(7 Z^{8}+7 Z^{7}+8 Z^{6}-8 Z^{5}-4 Z^{3}+2 Z^{2}-3 Z +1, \mathit{index} =4\right)^{-n +4}}{6226110184252166}-\frac{1194584782389937 \mathit{RootOf} \left(7 Z^{8}+7 Z^{7}+8 Z^{6}-8 Z^{5}-4 Z^{3}+2 Z^{2}-3 Z +1, \mathit{index} =5\right)^{-n +4}}{6226110184252166}-\frac{1194584782389937 \mathit{RootOf} \left(7 Z^{8}+7 Z^{7}+8 Z^{6}-8 Z^{5}-4 Z^{3}+2 Z^{2}-3 Z +1, \mathit{index} =6\right)^{-n +4}}{6226110184252166}-\frac{1194584782389937 \mathit{RootOf} \left(7 Z^{8}+7 Z^{7}+8 Z^{6}-8 Z^{5}-4 Z^{3}+2 Z^{2}-3 Z +1, \mathit{index} =7\right)^{-n +4}}{6226110184252166}-\frac{1194584782389937 \mathit{RootOf} \left(7 Z^{8}+7 Z^{7}+8 Z^{6}-8 Z^{5}-4 Z^{3}+2 Z^{2}-3 Z +1, \mathit{index} =8\right)^{-n +4}}{6226110184252166}-\frac{18280248420497 \mathit{RootOf} \left(7 Z^{8}+7 Z^{7}+8 Z^{6}-8 Z^{5}-4 Z^{3}+2 Z^{2}-3 Z +1, \mathit{index} =1\right)^{-n +3}}{478931552634782}-\frac{18280248420497 \mathit{RootOf} \left(7 Z^{8}+7 Z^{7}+8 Z^{6}-8 Z^{5}-4 Z^{3}+2 Z^{2}-3 Z +1, \mathit{index} =2\right)^{-n +3}}{478931552634782}-\frac{18280248420497 \mathit{RootOf} \left(7 Z^{8}+7 Z^{7}+8 Z^{6}-8 Z^{5}-4 Z^{3}+2 Z^{2}-3 Z +1, \mathit{index} =3\right)^{-n +3}}{478931552634782}-\frac{18280248420497 \mathit{RootOf} \left(7 Z^{8}+7 Z^{7}+8 Z^{6}-8 Z^{5}-4 Z^{3}+2 Z^{2}-3 Z +1, \mathit{index} =4\right)^{-n +3}}{478931552634782}-\frac{18280248420497 \mathit{RootOf} \left(7 Z^{8}+7 Z^{7}+8 Z^{6}-8 Z^{5}-4 Z^{3}+2 Z^{2}-3 Z +1, \mathit{index} =5\right)^{-n +3}}{478931552634782}-\frac{18280248420497 \mathit{RootOf} \left(7 Z^{8}+7 Z^{7}+8 Z^{6}-8 Z^{5}-4 Z^{3}+2 Z^{2}-3 Z +1, \mathit{index} =6\right)^{-n +3}}{478931552634782}-\frac{18280248420497 \mathit{RootOf} \left(7 Z^{8}+7 Z^{7}+8 Z^{6}-8 Z^{5}-4 Z^{3}+2 Z^{2}-3 Z +1, \mathit{index} =7\right)^{-n +3}}{478931552634782}-\frac{18280248420497 \mathit{RootOf} \left(7 Z^{8}+7 Z^{7}+8 Z^{6}-8 Z^{5}-4 Z^{3}+2 Z^{2}-3 Z +1, \mathit{index} =8\right)^{-n +3}}{478931552634782}+\frac{202633550511943 \mathit{RootOf} \left(7 Z^{8}+7 Z^{7}+8 Z^{6}-8 Z^{5}-4 Z^{3}+2 Z^{2}-3 Z +1, \mathit{index} =1\right)^{-n +2}}{6226110184252166}+\frac{202633550511943 \mathit{RootOf} \left(7 Z^{8}+7 Z^{7}+8 Z^{6}-8 Z^{5}-4 Z^{3}+2 Z^{2}-3 Z +1, \mathit{index} =2\right)^{-n +2}}{6226110184252166}+\frac{202633550511943 \mathit{RootOf} \left(7 Z^{8}+7 Z^{7}+8 Z^{6}-8 Z^{5}-4 Z^{3}+2 Z^{2}-3 Z +1, \mathit{index} =3\right)^{-n +2}}{6226110184252166}+\frac{202633550511943 \mathit{RootOf} \left(7 Z^{8}+7 Z^{7}+8 Z^{6}-8 Z^{5}-4 Z^{3}+2 Z^{2}-3 Z +1, \mathit{index} =4\right)^{-n +2}}{6226110184252166}+\frac{202633550511943 \mathit{RootOf} \left(7 Z^{8}+7 Z^{7}+8 Z^{6}-8 Z^{5}-4 Z^{3}+2 Z^{2}-3 Z +1, \mathit{index} =5\right)^{-n +2}}{6226110184252166}+\frac{202633550511943 \mathit{RootOf} \left(7 Z^{8}+7 Z^{7}+8 Z^{6}-8 Z^{5}-4 Z^{3}+2 Z^{2}-3 Z +1, \mathit{index} =6\right)^{-n +2}}{6226110184252166}+\frac{202633550511943 \mathit{RootOf} \left(7 Z^{8}+7 Z^{7}+8 Z^{6}-8 Z^{5}-4 Z^{3}+2 Z^{2}-3 Z +1, \mathit{index} =7\right)^{-n +2}}{6226110184252166}+\frac{202633550511943 \mathit{RootOf} \left(7 Z^{8}+7 Z^{7}+8 Z^{6}-8 Z^{5}-4 Z^{3}+2 Z^{2}-3 Z +1, \mathit{index} =8\right)^{-n +2}}{6226110184252166}+\frac{244876768743349 \mathit{RootOf} \left(7 Z^{8}+7 Z^{7}+8 Z^{6}-8 Z^{5}-4 Z^{3}+2 Z^{2}-3 Z +1, \mathit{index} =1\right)^{-n +1}}{3113055092126083}+\frac{244876768743349 \mathit{RootOf} \left(7 Z^{8}+7 Z^{7}+8 Z^{6}-8 Z^{5}-4 Z^{3}+2 Z^{2}-3 Z +1, \mathit{index} =2\right)^{-n +1}}{3113055092126083}+\frac{244876768743349 \mathit{RootOf} \left(7 Z^{8}+7 Z^{7}+8 Z^{6}-8 Z^{5}-4 Z^{3}+2 Z^{2}-3 Z +1, \mathit{index} =3\right)^{-n +1}}{3113055092126083}+\frac{244876768743349 \mathit{RootOf} \left(7 Z^{8}+7 Z^{7}+8 Z^{6}-8 Z^{5}-4 Z^{3}+2 Z^{2}-3 Z +1, \mathit{index} =4\right)^{-n +1}}{3113055092126083}+\frac{244876768743349 \mathit{RootOf} \left(7 Z^{8}+7 Z^{7}+8 Z^{6}-8 Z^{5}-4 Z^{3}+2 Z^{2}-3 Z +1, \mathit{index} =5\right)^{-n +1}}{3113055092126083}+\frac{244876768743349 \mathit{RootOf} \left(7 Z^{8}+7 Z^{7}+8 Z^{6}-8 Z^{5}-4 Z^{3}+2 Z^{2}-3 Z +1, \mathit{index} =6\right)^{-n +1}}{3113055092126083}+\frac{244876768743349 \mathit{RootOf} \left(7 Z^{8}+7 Z^{7}+8 Z^{6}-8 Z^{5}-4 Z^{3}+2 Z^{2}-3 Z +1, \mathit{index} =7\right)^{-n +1}}{3113055092126083}+\frac{244876768743349 \mathit{RootOf} \left(7 Z^{8}+7 Z^{7}+8 Z^{6}-8 Z^{5}-4 Z^{3}+2 Z^{2}-3 Z +1, \mathit{index} =8\right)^{-n +1}}{3113055092126083}+\frac{497581031739549 \mathit{RootOf} \left(7 Z^{8}+7 Z^{7}+8 Z^{6}-8 Z^{5}-4 Z^{3}+2 Z^{2}-3 Z +1, \mathit{index} =1\right)^{-n -1}}{12452220368504332}+\frac{497581031739549 \mathit{RootOf} \left(7 Z^{8}+7 Z^{7}+8 Z^{6}-8 Z^{5}-4 Z^{3}+2 Z^{2}-3 Z +1, \mathit{index} =2\right)^{-n -1}}{12452220368504332}+\frac{497581031739549 \mathit{RootOf} \left(7 Z^{8}+7 Z^{7}+8 Z^{6}-8 Z^{5}-4 Z^{3}+2 Z^{2}-3 Z +1, \mathit{index} =3\right)^{-n -1}}{12452220368504332}+\frac{497581031739549 \mathit{RootOf} \left(7 Z^{8}+7 Z^{7}+8 Z^{6}-8 Z^{5}-4 Z^{3}+2 Z^{2}-3 Z +1, \mathit{index} =4\right)^{-n -1}}{12452220368504332}+\frac{497581031739549 \mathit{RootOf} \left(7 Z^{8}+7 Z^{7}+8 Z^{6}-8 Z^{5}-4 Z^{3}+2 Z^{2}-3 Z +1, \mathit{index} =5\right)^{-n -1}}{12452220368504332}+\frac{497581031739549 \mathit{RootOf} \left(7 Z^{8}+7 Z^{7}+8 Z^{6}-8 Z^{5}-4 Z^{3}+2 Z^{2}-3 Z +1, \mathit{index} =6\right)^{-n -1}}{12452220368504332}+\frac{497581031739549 \mathit{RootOf} \left(7 Z^{8}+7 Z^{7}+8 Z^{6}-8 Z^{5}-4 Z^{3}+2 Z^{2}-3 Z +1, \mathit{index} =7\right)^{-n -1}}{12452220368504332}+\frac{497581031739549 \mathit{RootOf} \left(7 Z^{8}+7 Z^{7}+8 Z^{6}-8 Z^{5}-4 Z^{3}+2 Z^{2}-3 Z +1, \mathit{index} =8\right)^{-n -1}}{12452220368504332}+\frac{2122999850763533 \mathit{RootOf} \left(7 Z^{8}+7 Z^{7}+8 Z^{6}-8 Z^{5}-4 Z^{3}+2 Z^{2}-3 Z +1, \mathit{index} =3\right)^{-n}}{12452220368504332}+\frac{2122999850763533 \mathit{RootOf} \left(7 Z^{8}+7 Z^{7}+8 Z^{6}-8 Z^{5}-4 Z^{3}+2 Z^{2}-3 Z +1, \mathit{index} =4\right)^{-n}}{12452220368504332}+\frac{2122999850763533 \mathit{RootOf} \left(7 Z^{8}+7 Z^{7}+8 Z^{6}-8 Z^{5}-4 Z^{3}+2 Z^{2}-3 Z +1, \mathit{index} =5\right)^{-n}}{12452220368504332}+\frac{\left(-1\right)^{-n}}{13}+\frac{2122999850763533 \mathit{RootOf} \left(7 Z^{8}+7 Z^{7}+8 Z^{6}-8 Z^{5}-4 Z^{3}+2 Z^{2}-3 Z +1, \mathit{index} =6\right)^{-n}}{12452220368504332}+\frac{2122999850763533 \mathit{RootOf} \left(7 Z^{8}+7 Z^{7}+8 Z^{6}-8 Z^{5}-4 Z^{3}+2 Z^{2}-3 Z +1, \mathit{index} =7\right)^{-n}}{12452220368504332}+\frac{2122999850763533 \mathit{RootOf} \left(7 Z^{8}+7 Z^{7}+8 Z^{6}-8 Z^{5}-4 Z^{3}+2 Z^{2}-3 Z +1, \mathit{index} =8\right)^{-n}}{12452220368504332}+\frac{2122999850763533 \mathit{RootOf} \left(7 Z^{8}+7 Z^{7}+8 Z^{6}-8 Z^{5}-4 Z^{3}+2 Z^{2}-3 Z +1, \mathit{index} =1\right)^{-n}}{12452220368504332}+\frac{2122999850763533 \mathit{RootOf} \left(7 Z^{8}+7 Z^{7}+8 Z^{6}-8 Z^{5}-4 Z^{3}+2 Z^{2}-3 Z +1, \mathit{index} =2\right)^{-n}}{12452220368504332}\)
This specification was found using the strategy pack "Point Placements" and has 153 rules.
Found on January 18, 2022.Finding the specification took 4 seconds.
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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_{4}\! \left(x \right) F_{5}\! \left(x \right)\\
F_{4}\! \left(x \right) &= x\\
F_{5}\! \left(x \right) &= F_{20}\! \left(x \right)+F_{6}\! \left(x \right)\\
F_{6}\! \left(x \right) &= F_{1}\! \left(x \right)+F_{7}\! \left(x \right)\\
F_{7}\! \left(x \right) &= F_{8}\! \left(x \right)\\
F_{8}\! \left(x \right) &= F_{4}\! \left(x \right) F_{9}\! \left(x \right)\\
F_{9}\! \left(x \right) &= F_{10}\! \left(x \right)+F_{14}\! \left(x \right)\\
F_{10}\! \left(x \right) &= F_{1}\! \left(x \right)+F_{11}\! \left(x \right)\\
F_{11}\! \left(x \right) &= F_{12}\! \left(x \right)\\
F_{12}\! \left(x \right) &= F_{13}\! \left(x \right) F_{4}\! \left(x \right)\\
F_{13}\! \left(x \right) &= F_{1}\! \left(x \right)+F_{4}\! \left(x \right)\\
F_{14}\! \left(x \right) &= F_{15}\! \left(x \right)+F_{17}\! \left(x \right)\\
F_{15}\! \left(x \right) &= F_{16}\! \left(x \right)\\
F_{16}\! \left(x \right) &= F_{13}\! \left(x \right) F_{4}\! \left(x \right)\\
F_{17}\! \left(x \right) &= F_{18}\! \left(x \right)\\
F_{18}\! \left(x \right) &= F_{19}\! \left(x \right) F_{4}\! \left(x \right)\\
F_{19}\! \left(x \right) &= F_{15}\! \left(x \right)\\
F_{20}\! \left(x \right) &= F_{2}\! \left(x \right)+F_{21}\! \left(x \right)\\
F_{21}\! \left(x \right) &= F_{116}\! \left(x \right)+F_{22}\! \left(x \right)+F_{23}\! \left(x \right)\\
F_{22}\! \left(x \right) &= 0\\
F_{23}\! \left(x \right) &= F_{24}\! \left(x \right) F_{4}\! \left(x \right)\\
F_{24}\! \left(x \right) &= F_{25}\! \left(x \right)+F_{43}\! \left(x \right)\\
F_{25}\! \left(x \right) &= F_{26}\! \left(x \right)+F_{7}\! \left(x \right)\\
F_{26}\! \left(x \right) &= F_{22}\! \left(x \right)+F_{27}\! \left(x \right)+F_{34}\! \left(x \right)\\
F_{27}\! \left(x \right) &= F_{28}\! \left(x \right) F_{4}\! \left(x \right)\\
F_{28}\! \left(x \right) &= F_{29}\! \left(x \right)+F_{33}\! \left(x \right)\\
F_{29}\! \left(x \right) &= F_{11}\! \left(x \right)+F_{30}\! \left(x \right)\\
F_{30}\! \left(x \right) &= F_{31}\! \left(x \right)\\
F_{31}\! \left(x \right) &= F_{32}\! \left(x \right) F_{4}\! \left(x \right)\\
F_{32}\! \left(x \right) &= F_{4}\! \left(x \right)\\
F_{33}\! \left(x \right) &= F_{17}\! \left(x \right)\\
F_{34}\! \left(x \right) &= F_{35}\! \left(x \right) F_{4}\! \left(x \right)\\
F_{35}\! \left(x \right) &= F_{14}\! \left(x \right)+F_{36}\! \left(x \right)\\
F_{36}\! \left(x \right) &= F_{37}\! \left(x \right)+F_{40}\! \left(x \right)\\
F_{37}\! \left(x \right) &= F_{38}\! \left(x \right)\\
F_{38}\! \left(x \right) &= F_{39}\! \left(x \right) F_{4}\! \left(x \right)\\
F_{39}\! \left(x \right) &= F_{4}\! \left(x \right)\\
F_{40}\! \left(x \right) &= F_{41}\! \left(x \right)\\
F_{41}\! \left(x \right) &= F_{4}\! \left(x \right) F_{42}\! \left(x \right)\\
F_{42}\! \left(x \right) &= F_{37}\! \left(x \right)\\
F_{43}\! \left(x \right) &= F_{44}\! \left(x \right)+F_{59}\! \left(x \right)\\
F_{44}\! \left(x \right) &= F_{45}\! \left(x \right)\\
F_{45}\! \left(x \right) &= F_{4}\! \left(x \right) F_{46}\! \left(x \right)\\
F_{46}\! \left(x \right) &= F_{47}\! \left(x \right)+F_{53}\! \left(x \right)\\
F_{47}\! \left(x \right) &= F_{2}\! \left(x \right)+F_{48}\! \left(x \right)\\
F_{48}\! \left(x \right) &= F_{49}\! \left(x \right)\\
F_{49}\! \left(x \right) &= F_{4}\! \left(x \right) F_{50}\! \left(x \right)\\
F_{50}\! \left(x \right) &= F_{2}\! \left(x \right)+F_{51}\! \left(x \right)\\
F_{51}\! \left(x \right) &= F_{52}\! \left(x \right)\\
F_{52}\! \left(x \right) &= F_{2}\! \left(x \right) F_{4}\! \left(x \right)\\
F_{53}\! \left(x \right) &= F_{54}\! \left(x \right)+F_{56}\! \left(x \right)\\
F_{54}\! \left(x \right) &= F_{55}\! \left(x \right)\\
F_{55}\! \left(x \right) &= F_{4}\! \left(x \right) F_{50}\! \left(x \right)\\
F_{56}\! \left(x \right) &= F_{57}\! \left(x \right)\\
F_{57}\! \left(x \right) &= F_{4}\! \left(x \right) F_{58}\! \left(x \right)\\
F_{58}\! \left(x \right) &= F_{54}\! \left(x \right)\\
F_{59}\! \left(x \right) &= 2 F_{22}\! \left(x \right)+F_{106}\! \left(x \right)+F_{60}\! \left(x \right)\\
F_{60}\! \left(x \right) &= F_{4}\! \left(x \right) F_{61}\! \left(x \right)\\
F_{61}\! \left(x \right) &= F_{102}\! \left(x \right)+F_{62}\! \left(x \right)\\
F_{62}\! \left(x \right) &= F_{48}\! \left(x \right)+F_{63}\! \left(x \right)\\
F_{63}\! \left(x \right) &= F_{64}\! \left(x \right)\\
F_{64}\! \left(x \right) &= F_{4}\! \left(x \right) F_{65}\! \left(x \right)\\
F_{65}\! \left(x \right) &= F_{66}\! \left(x \right)\\
F_{66}\! \left(x \right) &= F_{22}\! \left(x \right)+F_{52}\! \left(x \right)+F_{67}\! \left(x \right)\\
F_{67}\! \left(x \right) &= F_{4}\! \left(x \right) F_{68}\! \left(x \right)\\
F_{68}\! \left(x \right) &= F_{69}\! \left(x \right)+F_{79}\! \left(x \right)\\
F_{69}\! \left(x \right) &= F_{4}\! \left(x \right)+F_{70}\! \left(x \right)\\
F_{70}\! \left(x \right) &= F_{22}\! \left(x \right)+F_{71}\! \left(x \right)+F_{78}\! \left(x \right)\\
F_{71}\! \left(x \right) &= F_{4}\! \left(x \right) F_{72}\! \left(x \right)\\
F_{72}\! \left(x \right) &= F_{73}\! \left(x \right)+F_{76}\! \left(x \right)\\
F_{73}\! \left(x \right) &= F_{4}\! \left(x \right)+F_{74}\! \left(x \right)\\
F_{74}\! \left(x \right) &= F_{75}\! \left(x \right)\\
F_{75}\! \left(x \right) &= x^{2}\\
F_{76}\! \left(x \right) &= F_{77}\! \left(x \right)\\
F_{77}\! \left(x \right) &= F_{78}\! \left(x \right)\\
F_{78}\! \left(x \right) &= F_{15}\! \left(x \right) F_{4}\! \left(x \right)\\
F_{79}\! \left(x \right) &= F_{51}\! \left(x \right)+F_{80}\! \left(x \right)\\
F_{80}\! \left(x \right) &= 2 F_{22}\! \left(x \right)+F_{81}\! \left(x \right)+F_{88}\! \left(x \right)\\
F_{81}\! \left(x \right) &= F_{4}\! \left(x \right) F_{82}\! \left(x \right)\\
F_{82}\! \left(x \right) &= F_{83}\! \left(x \right)+F_{86}\! \left(x \right)\\
F_{83}\! \left(x \right) &= F_{51}\! \left(x \right)+F_{84}\! \left(x \right)\\
F_{84}\! \left(x \right) &= F_{85}\! \left(x \right)\\
F_{85}\! \left(x \right) &= F_{4}\! \left(x \right) F_{66}\! \left(x \right)\\
F_{86}\! \left(x \right) &= F_{87}\! \left(x \right)\\
F_{87}\! \left(x \right) &= F_{88}\! \left(x \right)\\
F_{88}\! \left(x \right) &= F_{4}\! \left(x \right) F_{89}\! \left(x \right)\\
F_{89}\! \left(x \right) &= F_{100}\! \left(x \right)+F_{22}\! \left(x \right)+F_{90}\! \left(x \right)\\
F_{90}\! \left(x \right) &= F_{4}\! \left(x \right) F_{91}\! \left(x \right)\\
F_{91}\! \left(x \right) &= F_{92}\! \left(x \right)+F_{96}\! \left(x \right)\\
F_{92}\! \left(x \right) &= F_{15}\! \left(x \right)+F_{93}\! \left(x \right)\\
F_{93}\! \left(x \right) &= F_{22}\! \left(x \right)+F_{71}\! \left(x \right)+F_{94}\! \left(x \right)\\
F_{94}\! \left(x \right) &= F_{4}\! \left(x \right) F_{95}\! \left(x \right)\\
F_{95}\! \left(x \right) &= F_{15}\! \left(x \right)+F_{77}\! \left(x \right)\\
F_{96}\! \left(x \right) &= F_{54}\! \left(x \right)+F_{97}\! \left(x \right)\\
F_{97}\! \left(x \right) &= 2 F_{22}\! \left(x \right)+F_{81}\! \left(x \right)+F_{98}\! \left(x \right)\\
F_{98}\! \left(x \right) &= F_{4}\! \left(x \right) F_{99}\! \left(x \right)\\
F_{99}\! \left(x \right) &= F_{87}\! \left(x \right)+F_{89}\! \left(x \right)\\
F_{100}\! \left(x \right) &= F_{101}\! \left(x \right) F_{4}\! \left(x \right)\\
F_{101}\! \left(x \right) &= F_{2}\! \left(x \right)+F_{66}\! \left(x \right)\\
F_{102}\! \left(x \right) &= F_{103}\! \left(x \right)\\
F_{103}\! \left(x \right) &= F_{104}\! \left(x \right)\\
F_{104}\! \left(x \right) &= F_{105}\! \left(x \right) F_{4}\! \left(x \right)\\
F_{105}\! \left(x \right) &= F_{89}\! \left(x \right)\\
F_{106}\! \left(x \right) &= F_{107}\! \left(x \right) F_{4}\! \left(x \right)\\
F_{107}\! \left(x \right) &= F_{108}\! \left(x \right)+F_{109}\! \left(x \right)\\
F_{108}\! \left(x \right) &= F_{103}\! \left(x \right)+F_{89}\! \left(x \right)\\
F_{109}\! \left(x \right) &= F_{110}\! \left(x \right)+F_{113}\! \left(x \right)\\
F_{110}\! \left(x \right) &= F_{111}\! \left(x \right)\\
F_{111}\! \left(x \right) &= F_{112}\! \left(x \right) F_{4}\! \left(x \right)\\
F_{112}\! \left(x \right) &= F_{51}\! \left(x \right)\\
F_{113}\! \left(x \right) &= F_{114}\! \left(x \right)\\
F_{114}\! \left(x \right) &= F_{115}\! \left(x \right) F_{4}\! \left(x \right)\\
F_{115}\! \left(x \right) &= F_{110}\! \left(x \right)\\
F_{116}\! \left(x \right) &= F_{117}\! \left(x \right) F_{4}\! \left(x \right)\\
F_{117}\! \left(x \right) &= F_{118}\! \left(x \right)+F_{133}\! \left(x \right)\\
F_{118}\! \left(x \right) &= F_{119}\! \left(x \right)+F_{2}\! \left(x \right)\\
F_{119}\! \left(x \right) &= F_{120}\! \left(x \right)+F_{132}\! \left(x \right)+F_{22}\! \left(x \right)\\
F_{120}\! \left(x \right) &= F_{121}\! \left(x \right) F_{4}\! \left(x \right)\\
F_{121}\! \left(x \right) &= F_{122}\! \left(x \right)+F_{127}\! \left(x \right)\\
F_{122}\! \left(x \right) &= F_{11}\! \left(x \right)+F_{123}\! \left(x \right)\\
F_{123}\! \left(x \right) &= F_{124}\! \left(x \right)+F_{22}\! \left(x \right)+F_{27}\! \left(x \right)\\
F_{124}\! \left(x \right) &= F_{125}\! \left(x \right) F_{4}\! \left(x \right)\\
F_{125}\! \left(x \right) &= F_{126}\! \left(x \right)+F_{15}\! \left(x \right)\\
F_{126}\! \left(x \right) &= F_{38}\! \left(x \right)\\
F_{127}\! \left(x \right) &= F_{128}\! \left(x \right)+F_{48}\! \left(x \right)\\
F_{128}\! \left(x \right) &= 2 F_{22}\! \left(x \right)+F_{129}\! \left(x \right)+F_{60}\! \left(x \right)\\
F_{129}\! \left(x \right) &= F_{130}\! \left(x \right) F_{4}\! \left(x \right)\\
F_{130}\! \left(x \right) &= F_{131}\! \left(x \right)+F_{89}\! \left(x \right)\\
F_{131}\! \left(x \right) &= F_{111}\! \left(x \right)\\
F_{132}\! \left(x \right) &= F_{101}\! \left(x \right) F_{4}\! \left(x \right)\\
F_{133}\! \left(x \right) &= F_{134}\! \left(x \right)+F_{89}\! \left(x \right)\\
F_{134}\! \left(x \right) &= 2 F_{22}\! \left(x \right)+F_{135}\! \left(x \right)+F_{151}\! \left(x \right)\\
F_{135}\! \left(x \right) &= F_{136}\! \left(x \right) F_{4}\! \left(x \right)\\
F_{136}\! \left(x \right) &= F_{137}\! \left(x \right)+F_{143}\! \left(x \right)\\
F_{137}\! \left(x \right) &= F_{138}\! \left(x \right)+F_{17}\! \left(x \right)\\
F_{138}\! \left(x \right) &= 2 F_{22}\! \left(x \right)+F_{139}\! \left(x \right)+F_{141}\! \left(x \right)\\
F_{139}\! \left(x \right) &= F_{140}\! \left(x \right) F_{4}\! \left(x \right)\\
F_{140}\! \left(x \right) &= F_{31}\! \left(x \right)\\
F_{141}\! \left(x \right) &= F_{142}\! \left(x \right) F_{4}\! \left(x \right)\\
F_{142}\! \left(x \right) &= F_{37}\! \left(x \right)\\
F_{143}\! \left(x \right) &= F_{144}\! \left(x \right)+F_{56}\! \left(x \right)\\
F_{144}\! \left(x \right) &= 3 F_{22}\! \left(x \right)+F_{145}\! \left(x \right)+F_{149}\! \left(x \right)\\
F_{145}\! \left(x \right) &= F_{146}\! \left(x \right) F_{4}\! \left(x \right)\\
F_{146}\! \left(x \right) &= F_{147}\! \left(x \right)\\
F_{147}\! \left(x \right) &= F_{148}\! \left(x \right) F_{4}\! \left(x \right)\\
F_{148}\! \left(x \right) &= F_{51}\! \left(x \right)\\
F_{149}\! \left(x \right) &= F_{150}\! \left(x \right) F_{4}\! \left(x \right)\\
F_{150}\! \left(x \right) &= F_{110}\! \left(x \right)\\
F_{151}\! \left(x \right) &= F_{152}\! \left(x \right) F_{4}\! \left(x \right)\\
F_{152}\! \left(x \right) &= F_{89}\! \left(x \right)\\
\end{align*}\)