477807

Appears in sequences

• Triangle T(n, k) = [x^k] p(n, x), where p(n, x) = (1/n)*(1-x)^(2*n) * Sum_{j >= 0} binomial(n+j-1, j) * j^n * x^(j-1).at n=25A152260
• Product_{n>=1} (1 + x^n)^a(n) = 1 + x + x^2 + 2 * Sum_{n>=3} a(n)*x^n.at n=19A348755