Primes p == 1 (mod 4) such that (p-1)/4 is prime.

Terms

a(0) =13a(1) =29a(2) =53a(3) =149a(4) =173a(5) =269a(6) =293a(7) =317a(8) =389a(9) =509a(10) =557a(11) =653a(12) =773a(13) =797a(14) =1109a(15) =1229a(16) =1493a(17) =1637a(18) =1733a(19) =1949a(20) =1997a(21) =2309a(22) =2477a(23) =2693a(24) =2837a(25) =2909a(26) =2957a(27) =3413a(28) =3533a(29) =3677