Primes that remain prime through 2 iterations of function f(x) = 5x + 2.

Terms

a(0) =13a(1) =19a(2) =31a(3) =79a(4) =97a(5) =199a(6) =331a(7) =349a(8) =373a(9) =457a(10) =541a(11) =577a(12) =607a(13) =643a(14) =709a(15) =769a(16) =811a(17) =859a(18) =1021a(19) =1069a(20) =1171a(21) =1249a(22) =1321a(23) =1381a(24) =1447a(25) =1483a(26) =1693a(27) =1867a(28) =2113a(29) =2137