554822268

Appears in sequences

• a(n) = binomial(n+5, n)*binomial(n+10, n).at n=10A104673
• a(n) = binomial(4*n,2*n)*binomial(3*n,2*n).at n=5A275653
• Square array read by ascending antidiagonals: T(n,k) = [x^k] (1 - x)^(2*k) * Legendre_P(n*k, (1 + x)/(1 - x)) for n, k >= 0.at n=50A364303