a(n) = 58*n^2 + 1.

Terms

a(0) =1a(1) =59a(2) =233a(3) =523a(4) =929a(5) =1451a(6) =2089a(7) =2843a(8) =3713a(9) =4699a(10) =5801a(11) =7019a(12) =8353a(13) =9803a(14) =11369a(15) =13051a(16) =14849a(17) =16763a(18) =18793a(19) =20939a(20) =23201a(21) =25579a(22) =28073a(23) =30683a(24) =33409a(25) =36251a(26) =39209a(27) =42283a(28) =45473a(29) =48779