8-fold factorials: a(n) = Product_{k=0..n-1} (8*k+1).
A045755
8-fold factorials: a(n) = Product_{k=0..n-1} (8*k+1).
Terms
- a(0) =1a(1) =1a(2) =9a(3) =153a(4) =3825a(5) =126225a(6) =5175225a(7) =253586025a(8) =14454403425a(9) =939536222625
External references
- oeis: A045755