Squares of the form 8p - 7, where p is prime.

Terms

a(0) =9a(1) =49a(2) =81a(3) =225a(4) =289a(5) =529a(6) =625a(7) =1089a(8) =1521a(9) =1681a(10) =2209a(11) =3025a(12) =5041a(13) =6561a(14) =7569a(15) =7921a(16) =9025a(17) =10609a(18) =12769a(19) =14641a(20) =16129a(21) =16641a(22) =18769a(23) =20449a(24) =22801a(25) =23409a(26) =28561a(27) =31329a(28) =36481a(29) =37249