%I #7 Aug 07 2022 07:39:18
%S 1,7,13,17,19,31,37,43,47,49,59,61,67,71,73,79,91,97,101,103,107,109,
%T 119,127,133,137,139,149,151,157,163,167,169,181,193,197,199,211,217,
%U 221,223,227,229,241,247,257,259,263,269,271,277,283,289,301,307,311
%N Multiplicative closure of primes that are not Sophie Germain primes (A053176).
%C a(n) mod 6 = 1 or = 5; subsequence of A007310;
%C A156542(a(n)) = 0;
%C A045979 is a subsequence.
%H Reinhard Zumkeller, <a href="/A156543/b156543.txt">Table of n, a(n) for n = 1..1000</a>
%Y Cf. A007310, A045979, A053176, A156541, A156542.
%K nonn
%O 1,2
%A _Reinhard Zumkeller_, Feb 09 2009
|