Number of self-inverse permutations in S_n with longest increasing subsequence of length 7.
A217327
Number of self-inverse permutations in S_n with longest increasing subsequence of length 7.
Terms
- a(0) =1a(1) =7a(2) =55a(3) =319a(4) =1904a(5) =10275a(6) =56135a(7) =294386a(8) =1556323a(9) =8086433a(10) =42298721a(11) =219795160a(12) =1149139210a(13) =5999688692a(14) =31506046052a(15) =165664633982a(16) =875886376212
External references
- oeis: A217327