738680521142
domain: N
Appears in sequences
- Kendall-Mann numbers: the most common number of inversions in a permutation on n letters is floor(n*(n-1)/4); a(n) is the number of permutations with this many inversions.at n=15A000140
- Largest coefficient in expansion of Product_{i=1..n} (1-q^1+q^2-...+(-q)^i).at n=15A039909
- Numbers which are members of both A000140 and A039909.at n=10A179998
- a(n) is the number of permutations of [1..n] that have the same number of inversions as non-inversions.at n=16A316775