2650190400

Appears in sequences

• Triangle read by rows: T(n, k) = (binomial(n,k)*binomial(n+k,k))^2 = A063007(n, k)^2, for n >= 0, k = 0..n.at n=43A303987
• a(n) = (n!/floor(n/2)!^2)^2.at n=15A327998