Primes p such that 9*p + 2 is also prime.

Terms

a(0) =3a(1) =5a(2) =11a(3) =19a(4) =29a(5) =31a(6) =43a(7) =53a(8) =71a(9) =73a(10) =101a(11) =103a(12) =109a(13) =113a(14) =131a(15) =151a(16) =173a(17) =179a(18) =191a(19) =211a(20) =229a(21) =233a(22) =239a(23) =269a(24) =271a(25) =281a(26) =283a(27) =311a(28) =313a(29) =373