a(n) = Product_{k=0..n-1} (3*n+4*k).

A384166

a(n) = Product_{k=0..n-1} (3*n+4*k).

Terms

    a(0) =1a(1) =3a(2) =60a(3) =1989a(4) =92160a(5) =5486535a(6) =399072960a(7) =34298042625

External references