Primes p such that 10*p + 3 is also prime.

Terms

a(0) =2a(1) =5a(2) =7a(3) =11a(4) =17a(5) =19a(6) =23a(7) =29a(8) =31a(9) =37a(10) =43a(11) =59a(12) =61a(13) =67a(14) =73a(15) =101a(16) =103a(17) =109a(18) =137a(19) =149a(20) =173a(21) =191a(22) =193a(23) =197a(24) =199a(25) =211a(26) =227a(27) =229a(28) =233a(29) =239