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%I #8 Mar 30 2012 18:35:15
%S 2,3,7,11,13,17,19,23,29,31,37,47,67,71,73,79,97,127,157,167,197,241,
%T 337,367,397,487,523,569,787,1741,1987,2437,2617,8707
%N Smallest nonempty set S containing prime divisors of 10k+4 for each k in S.
%Y Cf. A020596. [From _R. J. Mathar_, Oct 25 2008]
%K nonn,fini,full
%O 1,1
%A _David W. Wilson_
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