Class 3+ primes (for definition see A005105).

Terms

a(0) =37a(1) =103a(2) =113a(3) =151a(4) =157a(5) =163a(6) =173a(7) =181a(8) =193a(9) =227a(10) =233a(11) =257a(12) =277a(13) =311a(14) =331a(15) =337a(16) =347a(17) =353a(18) =379a(19) =389a(20) =397a(21) =401a(22) =409a(23) =421a(24) =457a(25) =463a(26) =467a(27) =487a(28) =491a(29) =521