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

A384164

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

Terms

    a(0) =1a(1) =3a(2) =42a(3) =990a(4) =32760a(5) =1395360a(6) =72681840a(7) =4475671200a(8) =318073392000

External references