a(n) = n-th sept-factorial number divided by 4.

A034831

a(n) = n-th sept-factorial number divided by 4.

Terms

    a(0) =1a(1) =11a(2) =198a(3) =4950a(4) =158400a(5) =6177600a(6) =284169600a(7) =15060988800a(8) =903659328000

External references