41312060

Appears in sequences

• de Bruijn's S(6,n).at n=3A227357
• Square array T(n,k), n >= 0, k >= 0, read by antidiagonals, where T(n,k) is Sum_{j=0..2*n} (-1)^(n+j) * binomial(2*n,j)^k.at n=48A350594