Squares of the form 2*prime(n) - prime(n+1).

Terms

a(0) =1a(1) =9a(2) =25a(3) =81a(4) =225a(5) =361a(6) =441a(7) =1089a(8) =1225a(9) =2025a(10) =2601a(11) =3249a(12) =3721a(13) =5041a(14) =7569a(15) =7921a(16) =12321a(17) =13689a(18) =15129a(19) =18225a(20) =21609a(21) =30625a(22) =31329a(23) =38809a(24) =42025a(25) =47961a(26) =53361a(27) =59049a(28) =65025a(29) =77841