Smallest nonempty set S containing prime divisors of 7k+6 for each k in S.

Terms

a(0) =5a(1) =11a(2) =13a(3) =17a(4) =19a(5) =23a(6) =29a(7) =37a(8) =41a(9) =43a(10) =47a(11) =53a(12) =59a(13) =61a(14) =67a(15) =73a(16) =79a(17) =83a(18) =89a(19) =97a(20) =137a(21) =139a(22) =167a(23) =193a(24) =223a(25) =239a(26) =281a(27) =283a(28) =293a(29) =307