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

Terms

a(0) =11a(1) =31a(2) =211a(3) =1151a(4) =3181a(5) =5051a(6) =5261a(7) =6101a(8) =6661a(9) =9391a(10) =9551a(11) =10501a(12) =11701a(13) =13171a(14) =15901a(15) =16481a(16) =19531a(17) =22051a(18) =24181a(19) =26261a(20) =27031a(21) =28351a(22) =28591a(23) =28661a(24) =29411a(25) =30941a(26) =31321a(27) =32621a(28) =38011a(29) =40471