Primes congruent to 1 or 19 (mod 30).

Terms

a(0) =19a(1) =31a(2) =61a(3) =79a(4) =109a(5) =139a(6) =151a(7) =181a(8) =199a(9) =211a(10) =229a(11) =241a(12) =271a(13) =331a(14) =349a(15) =379a(16) =409a(17) =421a(18) =439a(19) =499a(20) =541a(21) =571a(22) =601a(23) =619a(24) =631a(25) =661a(26) =691a(27) =709a(28) =739a(29) =751