305571

Appears in sequences

• Triangle T(n,k): the coefficient of [x^k] of the series -(x-1)^(2*n+1) *Sum_{j>=0} (j+1)^n *binomial(j,n) * x^(j-n); columns 0<=k<n.at n=16A155163
• Triangle of coefficients of the numerator polynomials of the rational o.g.f.'s of the diagonals of A059297.at n=20A202017
• a(1) = 0, a(2) = 1, and for n > 2, a(n) = 2*a(A252463(n)) + [n == 1 (mod 6)].at n=66A292941