Primes p such that p + 10 is also prime.

Terms

a(0) =3a(1) =7a(2) =13a(3) =19a(4) =31a(5) =37a(6) =43a(7) =61a(8) =73a(9) =79a(10) =97a(11) =103a(12) =127a(13) =139a(14) =157a(15) =163a(16) =181a(17) =223a(18) =229a(19) =241a(20) =271a(21) =283a(22) =307a(23) =337a(24) =349a(25) =373a(26) =379a(27) =409a(28) =421a(29) =433