Primes that remain prime through 2 iterations of function f(x) = 3x + 10.

Terms

a(0) =3a(1) =7a(2) =11a(3) =17a(4) =19a(5) =47a(6) =67a(7) =109a(8) =149a(9) =151a(10) =199a(11) =227a(12) =233a(13) =347a(14) =353a(15) =359a(16) =397a(17) =431a(18) =457a(19) =487a(20) =563a(21) =571a(22) =577a(23) =607a(24) =709a(25) =809a(26) =919a(27) =947a(28) =997a(29) =1013