a(n) = (4*(n+10)^n+n^n)/5.

A083305

a(n) = (4*(n+10)^n+n^n)/5.

Terms

    a(0) =1a(1) =9a(2) =116a(3) =1763a(4) =30784a(5) =608125a(6) =13431104a(7) =328435647a(8) =8819323904a(9) =258227642321

External references