Number of permutations of [n] with exactly one occurrence of the generalized pattern 23-1.
A264460
Number of permutations of [n] with exactly one occurrence of the generalized pattern 23-1.
Terms
- a(0) =1a(1) =6a(2) =32a(3) =171a(4) =944a(5) =5444a(6) =32919a(7) =208816a(8) =1388240a(9) =9657929a(10) =70187054a(11) =531857288a(12) =4194927585a(13) =34379859346a(14) =292303350268
External references
- oeis: A264460