Primes that remain prime through 2 iterations of the function f(x) = 3*x + 2.

Terms

a(0) =5a(1) =7a(2) =19a(3) =29a(4) =79a(5) =89a(6) =97a(7) =127a(8) =139a(9) =167a(10) =317a(11) =337a(12) =397a(13) =419a(14) =607a(15) =659a(16) =709a(17) =877a(18) =929a(19) =1069a(20) =1129a(21) =1409a(22) =1699a(23) =1777a(24) =2029a(25) =2099a(26) =2267a(27) =2339a(28) =2557a(29) =2617