Primes that remain prime through 5 iterations of function f(x) = 8x + 3.

Terms

a(0) =774791a(1) =924731a(2) =4593221a(3) =5181641a(4) =9905521a(5) =11523361a(6) =11755831a(7) =12253321a(8) =14078711a(9) =14545331a(10) =14928791a(11) =18523361a(12) =18686531a(13) =24169001a(14) =25614361a(15) =26221051a(16) =26834461a(17) =30970201a(18) =33446521a(19) =40051021a(20) =42888191a(21) =43703201a(22) =47528561a(23) =48653951