A020611 - OEIS

%I #11 Feb 16 2013 18:47:29

%S 5,11,13,17,19,23,29,37,41,43,47,53,59,61,67,73,79,83,89,97,137,139,

%T 167,193,223,239,281,283,293,307,337,347,419,431,433,439,443,487,587,

%U 683,823,1567,1583,1973,1987,2707,2939,3023,3037,3079,3733,4253,4787,6703

%N Smallest nonempty set S containing prime divisors of 7k+6 for each k in S.

%H Nathaniel Johnston, <a href="/A020611/b020611.txt">Table of n, a(n) for n = 1..57</a> (full sequence)

%K nonn,fini,full

%O 1,1

%A _David W. Wilson_