Number of simple allowable sequences on 1..n containing the permutation 12...n.
A005118
Number of simple allowable sequences on 1..n containing the permutation 12...n.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =2a(4) =16a(5) =768a(6) =292864a(7) =1100742656
External references
- oeis: A005118