a(n) = 8*n^2 + 7*n + 1.

Terms

a(0) =1a(1) =16a(2) =47a(3) =94a(4) =157a(5) =236a(6) =331a(7) =442a(8) =569a(9) =712a(10) =871a(11) =1046a(12) =1237a(13) =1444a(14) =1667a(15) =1906a(16) =2161a(17) =2432a(18) =2719a(19) =3022a(20) =3341a(21) =3676a(22) =4027a(23) =4394a(24) =4777a(25) =5176a(26) =5591a(27) =6022a(28) =6469a(29) =6932