a(n) = (30*n)!*(3*n)!*(2*n)!/((15*n)!*(10*n)!*(6*n)!*(4*n)!).

A295460

a(n) = (30*n)!*(3*n)!*(2*n)!/((15*n)!*(10*n)!*(6*n)!*(4*n)!).

Terms

    a(0) =1a(1) =38818159380

External references