Number of self-inverse permutations in S_n with longest increasing subsequence of length 8.
A217328
Number of self-inverse permutations in S_n with longest increasing subsequence of length 8.
Terms
- a(0) =1a(1) =8a(2) =71a(3) =461a(4) =3057a(5) =18225a(6) =109446a(7) =628652a(8) =3628517a(9) =20538209a(10) =116808172a(11) =659078098a(12) =3737763884a(13) =21153403644a(14) =120354760098a(15) =685455514294
External references
- oeis: A217328