Smallest nonempty set S containing prime divisors of 5k+8 for each k in S.

Terms

a(0) =3a(1) =7a(2) =11a(3) =13a(4) =17a(5) =19a(6) =23a(7) =31a(8) =41a(9) =43a(10) =61a(11) =67a(12) =71a(13) =73a(14) =103a(15) =163a(16) =223a(17) =311a(18) =313a(19) =373a(20) =521a(21) =523a(22) =823a(23) =1123a(24) =1873a(25) =5623a(26) =20089a(27) =28123