Primes that remain prime through 2 iterations of the function f(x) = 5x + 8.

Terms

a(0) =7a(1) =13a(2) =19a(3) =31a(4) =43a(5) =73a(6) =211a(7) =223a(8) =241a(9) =307a(10) =397a(11) =409a(12) =631a(13) =661a(14) =727a(15) =757a(16) =769a(17) =829a(18) =883a(19) =1123a(20) =1741a(21) =1783a(22) =1867a(23) =2131a(24) =2143a(25) =2269a(26) =2287a(27) =2467a(28) =2521a(29) =2551