a(n) = Product_{i=0..n, j=0..n} (binomial(2*i, i) + binomial(2*j, j)).

A324566

a(n) = Product_{i=0..n, j=0..n} (binomial(2*i, i) + binomial(2*j, j)).

Terms

    a(0) =2a(1) =72a(2) =2709504

External references