One half of the sum over all permutations of [n] of the absolute difference between the length of the longest increasing subsequence and the length of the longest decreasing subsequence.
A321277
One half of the sum over all permutations of [n] of the absolute difference between the length of the longest increasing subsequence and the length of the longest decreasing subsequence.
Terms
- a(0) =0a(1) =1a(2) =2a(3) =12a(4) =61a(5) =367a(6) =2805a(7) =23372a(8) =213317a(9) =2189823a(10) =24882811a(11) =305633678a(12) =4037554628a(13) =57447084699a(14) =877263905683
External references
- oeis: A321277