Primes p such that 3p + 4 is also prime.

Terms

a(0) =3a(1) =5a(2) =11a(3) =13a(4) =19a(5) =23a(6) =31a(7) =41a(8) =53a(9) =59a(10) =73a(11) =79a(12) =89a(13) =101a(14) =103a(15) =109a(16) =131a(17) =139a(18) =151a(19) =173a(20) =179a(21) =181a(22) =191a(23) =199a(24) =223a(25) =229a(26) =241a(27) =251a(28) =269a(29) =283