%I A156541
%S A156541 1,2,3,4,5,6,8,9,10,11,12,15,16,18,20,22,23,24,25,27,29,30,32,33,36,40,
%T A156541 41,44,45,46,48,50,53,54,55,58,60,64,66,69,72,75,80,81,82,83,87,88,89,
%U A156541 90,92,96,99,100,106,108,110,113,115,116,120,121,123,125,128,131,132
%N A156541 Multiplicative closure of Sophie Germain primes (A005384).
%C A156541 A156542(a(n)) = A001221(a(n));
%C A156541 Subsequence of A130176.
%H A156541 R. Zumkeller, <a href="b156541.txt">Table of n, a(n) for n = 1..1000</
               a>
%Y A156541 A156541 A156543.
%Y A156541 Sequence in context: A157465 A067942 A130176 this_sequence A031143 A055492 
               A005459
%Y A156541 Adjacent sequences: A156538 A156539 A156540 this_sequence A156542 A156543 
               A156544
%K A156541 nonn
%O A156541 1,2
%A A156541 Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), Feb 10 2009