Smallest nonempty set S containing prime divisors of 10k+7 for each k in S.

Terms

a(0) =3a(1) =11a(2) =13a(3) =17a(4) =19a(5) =23a(6) =29a(7) =31a(8) =37a(9) =41a(10) =47a(11) =53a(12) =59a(13) =61a(14) =67a(15) =71a(16) =73a(17) =79a(18) =107a(19) =109a(20) =127a(21) =131a(22) =137a(23) =139a(24) =151a(25) =179a(26) =191a(27) =197a(28) =199a(29) =211