a(n) = n^2 + n + 8.

Terms

a(0) =8a(1) =10a(2) =14a(3) =20a(4) =28a(5) =38a(6) =50a(7) =64a(8) =80a(9) =98a(10) =118a(11) =140a(12) =164a(13) =190a(14) =218a(15) =248a(16) =280a(17) =314a(18) =350a(19) =388a(20) =428a(21) =470a(22) =514a(23) =560a(24) =608a(25) =658a(26) =710a(27) =764a(28) =820a(29) =878