Primes p such that 3*p + 2 is also prime.

Terms

a(0) =3a(1) =5a(2) =7a(3) =13a(4) =17a(5) =19a(6) =23a(7) =29a(8) =37a(9) =43a(10) =59a(11) =79a(12) =83a(13) =89a(14) =97a(15) =103a(16) =127a(17) =139a(18) =149a(19) =163a(20) =167a(21) =173a(22) =197a(23) =199a(24) =227a(25) =233a(26) =239a(27) =257a(28) =269a(29) =293