369754

Appears in sequences

• Triangular array of coefficients of polynomials p(n,k) defined in Comments.at n=26A248664
• Triangular array of coefficients of polynomials p(n,x) defined in Comments; these are the polynomials defined at A248664, but here the coefficients are written in the order of decreasing powers of x.at n=22A248665
• Triangle read by rows. T(n, k) = [x^k] P(n, x), where P(n, x) = Sum_{k=0..n} 2^(n - k) * Sum_{j=0..k} (x^j * binomial(k, j) * (2*j + 1)^n), (secant case).at n=18A363398
• G.f. A(x) satisfies A(x) = ( 1 + 49*x*A(x) )^(1/7).at n=5A385206