a(n) = (n+2)^(n+3) - n^(n+1).

A060375

a(n) = (n+2)^(n+3) - n^(n+1).

Terms

    a(0) =8a(1) =80a(2) =1016a(3) =15544a(4) =278912a(5) =5749176a(6) =133937792a(7) =3481019600a(8) =99865782272

External references