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%I #6 Mar 30 2012 18:35:14
%S 3,7,11,13,17,19,23,31,41,43,61,67,71,73,103,163,223,311,313,373,521,
%T 523,823,1123,1873,5623,20089,28123
%N Smallest nonempty set S containing prime divisors of 5k+8 for each k in S.
%K nonn,fini,full
%O 1,1
%A _David W. Wilson_