-14208

Appears in sequences

• Triangle, T(n, k) = (1/2)*(n+2)! * [x^k]( p(x, n) ), where p(x,0) = 1, p(x,1) = -x, P(x, n) = (1/(n+1))*( (2*n-x)*P(x, n-1) - n*P(x, n-2) ), read by rows.at n=21A136532
• Triangle of nonzero (even) coefficients of the matching polynomials for the hypercube graphs Q_n.at n=13A192437
• a(n)=(n-1)-st elementary symmetric function of the first n terms of (2, -4, 6, -8, 10, ...).at n=5A203238