a(n) = product of next n even numbers beginning with n if n is even, otherwise product of next n odd numbers beginning with n.

A113551

a(n) = product of next n even numbers beginning with n if n is even, otherwise product of next n odd numbers beginning with n.

Terms

    a(0) =1a(1) =8a(2) =105a(3) =1920a(4) =45045a(5) =1290240a(6) =43648605a(7) =1703116800a(8) =75293843625

External references