a(n) = 32*n^2 + 1.

Terms

a(0) =1a(1) =33a(2) =129a(3) =289a(4) =513a(5) =801a(6) =1153a(7) =1569a(8) =2049a(9) =2593a(10) =3201a(11) =3873a(12) =4609a(13) =5409a(14) =6273a(15) =7201a(16) =8193a(17) =9249a(18) =10369a(19) =11553a(20) =12801a(21) =14113a(22) =15489a(23) =16929a(24) =18433a(25) =20001a(26) =21633a(27) =23329a(28) =25089a(29) =26913