%I #3 Mar 30 2012 16:50:31
%S 1,2,3,4,5,6,7,8,9,4,3,8,5,8,9,11,9,14,11,12,9,10,7,20,11,14,15,20,13,
%T 24,7,20,15,16,17,33,13,20,21,32,9,34,11,28,29,22,15,48,21,30,21,32,
%U 13,44,25,46,27,28,19,72,13,26,39,46,29,54,19,44,33,56,15,86,17,32,47,48,35,64
%N a(n) = n_d(n) where d() = A000005.
%C See A122618 for notation.
%K nonn,base
%O 1,2
%A _N. J. A. Sloane_, Sep 22 2006