a(n) = (n^3 - n^2)*8^n.

A128991

a(n) = (n^3 - n^2)*8^n.

Terms

    a(0) =0a(1) =256a(2) =9216a(3) =196608a(4) =3276800a(5) =47185920a(6) =616562688a(7) =7516192768a(8) =86973087744a(9) =966367641600

External references