Pentagorials: n-th polygorial for k=5.

A084939

Pentagorials: n-th polygorial for k=5.

Terms

    a(0) =1a(1) =1a(2) =5a(3) =60a(4) =1320a(5) =46200a(6) =2356200a(7) =164934000a(8) =15173928000

External references