Joffe's central differences of 0, A241171(n,n-1).

A002456

Joffe's central differences of 0, A241171(n,n-1).

Terms

    a(0) =0a(1) =1a(2) =30a(3) =1260a(4) =75600a(5) =6237000a(6) =681080400a(7) =95351256000

External references