a(n) = binomial(n + 5, 5)*9^n.

A173188

a(n) = binomial(n + 5, 5)*9^n.

Terms

    a(0) =1a(1) =54a(2) =1701a(3) =40824a(4) =826686a(5) =14880348a(6) =245525742a(7) =3788111448a(8) =55401129927a(9) =775615818978

External references