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

Terms

a(0) =0a(1) =5a(2) =62a(3) =363a(4) =1364a(5) =3905a(6) =9330a(7) =19607a(8) =37448a(9) =66429a(10) =111110a(11) =177155a(12) =271452a(13) =402233a(14) =579194a(15) =813615a(16) =1118480a(17) =1508597a(18) =2000718a(19) =2613659a(20) =3368420a(21) =4288305a(22) =5399042a(23) =6728903a(24) =8308824a(25) =10172525a(26) =12356630a(27) =14900787a(28) =17847788a(29) =21243689