Sum over all permutations of [n] of the length of the longest increasing subsequence raised to the power of the length of the longest decreasing subsequence.
A321276
Sum over all permutations of [n] of the length of the longest increasing subsequence raised to the power of the length of the longest decreasing subsequence.
Terms
- a(0) =1a(1) =3a(2) =20a(3) =174a(4) =1915a(5) =25861a(6) =407691a(7) =7330188a(8) =148016449a(9) =3312032213a(10) =81207824255
External references
- oeis: A321276