a(n) = 2*n^2 + 15*n.

Terms

a(0) =0a(1) =17a(2) =38a(3) =63a(4) =92a(5) =125a(6) =162a(7) =203a(8) =248a(9) =297a(10) =350a(11) =407a(12) =468a(13) =533a(14) =602a(15) =675a(16) =752a(17) =833a(18) =918a(19) =1007a(20) =1100a(21) =1197a(22) =1298a(23) =1403a(24) =1512a(25) =1625a(26) =1742a(27) =1863a(28) =1988a(29) =2117