Primes that remain prime through 3 iterations of function f(x) = 8x + 7.

Terms

a(0) =659a(1) =2549a(2) =5189a(3) =6269a(4) =7229a(5) =7949a(6) =9209a(7) =11579a(8) =16139a(9) =18089a(10) =22739a(11) =25589a(12) =26099a(13) =26339a(14) =29009a(15) =30689a(16) =40289a(17) =51719a(18) =55799a(19) =59669a(20) =60689a(21) =61379a(22) =63599a(23) =69959a(24) =70229a(25) =74609a(26) =85829a(27) =94949a(28) =95819a(29) =102539