a(n) = 128*n^2 - 32*n + 1.

Terms

a(0) =97a(1) =449a(2) =1057a(3) =1921a(4) =3041a(5) =4417a(6) =6049a(7) =7937a(8) =10081a(9) =12481a(10) =15137a(11) =18049a(12) =21217a(13) =24641a(14) =28321a(15) =32257a(16) =36449a(17) =40897a(18) =45601a(19) =50561a(20) =55777a(21) =61249a(22) =66977a(23) =72961a(24) =79201a(25) =85697a(26) =92449a(27) =99457a(28) =106721a(29) =114241