Primes that remain prime through 4 iterations of function f(x) = 3x + 8.

Terms

a(0) =3181a(1) =9551a(2) =22051a(3) =30941a(4) =32621a(5) =61981a(6) =76651a(7) =99961a(8) =134291a(9) =151901a(10) =163661a(11) =185951a(12) =226691a(13) =227671a(14) =240551a(15) =288191a(16) =342821a(17) =374501a(18) =394411a(19) =402881a(20) =423781a(21) =426301a(22) =446461a(23) =456151a(24) =459091a(25) =460951a(26) =554011a(27) =572321a(28) =577601a(29) =617191