a(n) = n-th sextic factorial number divided by 2.

A034689

a(n) = n-th sextic factorial number divided by 2.

Terms

    a(0) =1a(1) =8a(2) =112a(3) =2240a(4) =58240a(5) =1863680a(6) =70819840a(7) =3116072960a(8) =155803648000

External references