Primes p == +- 3 (mod 8), or, primes p such that 2 is not a square mod p.

Terms

a(0) =3a(1) =5a(2) =11a(3) =13a(4) =19a(5) =29a(6) =37a(7) =43a(8) =53a(9) =59a(10) =61a(11) =67a(12) =83a(13) =101a(14) =107a(15) =109a(16) =131a(17) =139a(18) =149a(19) =157a(20) =163a(21) =173a(22) =179a(23) =181a(24) =197a(25) =211a(26) =227a(27) =229a(28) =251a(29) =269