a(n) = n^6*(n^4 + n^2 + 1)*(n^3 - 1)*(n - 1).
A064587
a(n) = n^6*(n^4 + n^2 + 1)*(n^3 - 1)*(n - 1).
Terms
- a(0) =0a(1) =0a(2) =9408a(3) =3449628a(4) =211341312a(5) =5045250000a(6) =66856881600a(7) =591709998348
External references
- oeis: A064587
A064587
a(n) = n^6*(n^4 + n^2 + 1)*(n^3 - 1)*(n - 1).