Av(1243, 1342, 1423, 1432, 2143, 2413, 2431, 3142, 3412, 4132, 4231)
Generating Function
Counting Sequence
1, 1, 2, 6, 13, 28, 59, 122, 249, 504, 1015, 2038, 4085, 8180, 16371, ...
Implicit Equation for the Generating Function
Recurrence
Explicit Closed Form
This specification was found using the strategy pack "Point Placements" and has 21 rules.
Found on July 23, 2021.Finding the specification took 2 seconds.
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