Primes p such that 5*p + 4 is also prime.

Terms

a(0) =3a(1) =5a(2) =11a(3) =17a(4) =29a(5) =47a(6) =53a(7) =71a(8) =83a(9) =89a(10) =101a(11) =113a(12) =131a(13) =167a(14) =251a(15) =257a(16) =263a(17) =281a(18) =311a(19) =389a(20) =419a(21) =461a(22) =467a(23) =479a(24) =491a(25) =509a(26) =521a(27) =557a(28) =563a(29) =587