Primes that remain prime through 5 iterations of function f(x) = 4x + 3.

Terms

a(0) =9769a(1) =13781a(2) =17231a(3) =32059a(4) =32611a(5) =36251a(6) =46381a(7) =47417a(8) =55171a(9) =68927a(10) =103451a(11) =130447a(12) =182599a(13) =189671a(14) =220687a(15) =236627a(16) =241169a(17) =273641a(18) =275711a(19) =350219a(20) =374159a(21) =413951a(22) =471769a(23) =497579a(24) =498439a(25) =520631a(26) =521791a(27) =583777a(28) =601061a(29) =635809