Primes that remain prime through 4 iterations of function f(x) = 8x + 5.

Terms

a(0) =8431a(1) =9721a(2) =24169a(3) =35311a(4) =63577a(5) =74203a(6) =109471a(7) =109891a(8) =140269a(9) =174613a(10) =176599a(11) =182857a(12) =210187a(13) =241561a(14) =270553a(15) =274837a(16) =274909a(17) =276517a(18) =281557a(19) =324763a(20) =326737a(21) =383659a(22) =464089a(23) =474127a(24) =489109a(25) =498403a(26) =540781a(27) =563587a(28) =576943a(29) =582949