Square array A(n,k), n>=0, k>=0, read by antidiagonals, where A(n,k) is the constant term in the expansion of (Sum_{j=0..n} j*(x^j + x^(-j)))^k.

A322549

Square array A(n,k), n>=0, k>=0, read by antidiagonals, where A(n,k) is the constant term in the expansion of (Sum_{j=0..n} j*(x^j + x^(-j)))^k.