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%I #5 Mar 30 2012 18:39:36
%S 2,3,8,5,12,7,16,27,10,33,24,13,28,45,48,17,54,38,20,63,44,69,96,50,
%T 26,54,28,58,210,62,96,33,170,35,108,111,76,117,120,41,210,43,88,45,
%U 276,282,96,49,100,153,52,265,162,165,168,57,174,118,60
%N a(n) = A141042(n+1)/2.
%Y Cf. A000040, A000720, A141042, A152535.
%K easy,nonn
%O 1,1
%A _Omar E. Pol_, Jul 30 2009
%E More terms from _Sean A. Irvine_, Jun 22 2011