a(n) = 1089*n^2 + 33.

Terms

a(0) =33a(1) =1122a(2) =4389a(3) =9834a(4) =17457a(5) =27258a(6) =39237a(7) =53394a(8) =69729a(9) =88242a(10) =108933a(11) =131802a(12) =156849a(13) =184074a(14) =213477a(15) =245058a(16) =278817a(17) =314754a(18) =352869a(19) =393162a(20) =435633a(21) =480282a(22) =527109a(23) =576114a(24) =627297a(25) =680658a(26) =736197a(27) =793914a(28) =853809a(29) =915882