15402816

Appears in sequences

• a(n) = binomial(n+5, n)*binomial(n+10, n).at n=7A104673
• a(n) = binomial(n+7,7)*binomial(n+12,7).at n=5A104680
• a(n) = C(2+2*n, n) * C(7+2*n, 2+n).at n=5A113895
• Expansion of e.g.f. 1/(1 - x * exp(x * (exp(x) - 1))).at n=9A362245