%I #4 Mar 30 2012 18:56:38
%S 6,8,9,12,15,16,18,20,21,24,27,28,30,32,33,36,39,40,42,45,48,50,51,54,
%T 56,57,60,63,64,66,69,70,72,75,78,80,81,84,87,88,90,93,96,98,99,100,
%U 102,104,105,108,110,111,112,114,117,120,123
%N a(n)=(1/2)*s(n), where s=A043544.
%K nonn,base
%O 1,1
%A _Clark Kimberling_
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