Number of cycles with at most 2 alternating runs in all permutations of [n] (it is assumed that the smallest element of the cycle is in the first position).
A187249
Number of cycles with at most 2 alternating runs in all permutations of [n] (it is assumed that the smallest element of the cycle is in the first position).
Terms
- a(0) =0a(1) =1a(2) =3a(3) =11a(4) =48a(5) =248a(6) =1504a(7) =10560a(8) =84544a(9) =761024a(10) =7610496a(11) =83715968a(12) =1004592640a(13) =13059706368a(14) =182835893248
External references
- oeis: A187249