a(n) = (30*n)!*(5*n)!*(4*n)!/((15*n)!*(10*n)!*(8*n)!*(6*n)!).

A295458

a(n) = (30*n)!*(5*n)!*(4*n)!/((15*n)!*(10*n)!*(8*n)!*(6*n)!).

Terms

    a(0) =1a(1) =5545451340

External references