Smallest nonempty set S containing prime divisors of 8k+7 for each k in S.

Terms

a(0) =3a(1) =5a(2) =11a(3) =13a(4) =17a(5) =19a(6) =23a(7) =29a(8) =31a(9) =37a(10) =41a(11) =47a(12) =53a(13) =61a(14) =67a(15) =71a(16) =83a(17) =97a(18) =101a(19) =109a(20) =163a(21) =181a(22) =191a(23) =239a(24) =263a(25) =293a(26) =307a(27) =383a(28) =431a(29) =691