Primes that remain prime through 3 iterations of function f(x) = 9x + 2.

Terms

a(0) =19a(1) =103a(2) =113a(3) =151a(4) =239a(5) =283a(6) =313a(7) =599a(8) =929a(9) =1481a(10) =2411a(11) =2549a(12) =2593a(13) =2741a(14) =2819a(15) =2969a(16) =3931a(17) =4091a(18) =4463a(19) =4523a(20) =5279a(21) =5923a(22) =6781a(23) =7759a(24) =8209a(25) =8363a(26) =9749a(27) =10133a(28) =10531a(29) =12919