Smallest nonempty set S containing prime divisors of 9k+5 for each k in S.

Terms

a(0) =2a(1) =7a(2) =11a(3) =13a(4) =17a(5) =19a(6) =23a(7) =29a(8) =43a(9) =53a(10) =59a(11) =61a(12) =67a(13) =71a(14) =79a(15) =101a(16) =179a(17) =241a(18) =277a(19) =367a(20) =457a(21) =827a(22) =1087a(23) =1249a(24) =1549a(25) =2447a(26) =5507a(27) =5623a(28) =12653a(29) =56941