a(n) = 1 + 2*n^2 + 3*n^3 + 4*n^4 + 5*n^5.

Terms

a(0) =1a(1) =15a(2) =257a(3) =1639a(4) =6369a(5) =18551a(6) =44785a(7) =94767a(8) =181889a(9) =323839a(10) =543201a(11) =868055a(12) =1332577a(13) =1977639a(14) =2851409a(15) =4009951a(16) =5517825a(17) =7448687a(18) =9885889a(19) =12923079a(20) =16664801a(21) =21227095a(22) =26738097a(23) =33338639a(24) =41182849a(25) =50438751a(26) =61288865a(27) =73930807a(28) =88577889a(29) =105459719