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Smallest nonempty set S containing prime divisors of 3k+5 for each k in S.
0

%I #6 Mar 30 2012 18:35:14

%S 2,7,11,13,19,31

%N Smallest nonempty set S containing prime divisors of 3k+5 for each k in S.

%K nonn,fini,full

%O 1,1

%A _David W. Wilson_