Primes of the form 31x^2+22xy+31y^2.

Terms

a(0) =31a(1) =199a(2) =271a(3) =439a(4) =1039a(5) =1231a(6) =1279a(7) =1399a(8) =1879a(9) =1951a(10) =2239a(11) =2551a(12) =2719a(13) =2791a(14) =3079a(15) =3391a(16) =3559a(17) =3631a(18) =3919a(19) =4231a(20) =4591a(21) =4639a(22) =4759a(23) =5431a(24) =5479a(25) =6079a(26) =6151a(27) =6271a(28) =6991a(29) =7159