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

Terms

a(0) =3203a(1) =21683a(2) =34613a(3) =52813a(4) =103843a(5) =116933a(6) =117443a(7) =165443a(8) =172933a(9) =193603a(10) =195053a(11) =213973a(12) =226783a(13) =321053a(14) =322193a(15) =357613a(16) =360323a(17) =362233a(18) =363403a(19) =368743a(20) =472393a(21) =474143a(22) =496333a(23) =518543a(24) =528673a(25) =569083a(26) =571303a(27) =631853a(28) =654623a(29) =714893