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A020608 Smallest nonempty set S containing prime divisors of 7k+3 for each k in S. 1

%I

%S 2,5,17,19,43,61

%N Smallest nonempty set S containing prime divisors of 7k+3 for each k in S.

%K nonn,fini,full

%O 1,1

%A _David W. Wilson_

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Last modified June 26 05:55 EDT 2022. Contains 354877 sequences. (Running on oeis4.)