%I #2 Mar 30 2012 17:26:35
%S 3,2,6,4,20,10,20,6,24,6,34,26,4,26,40,44,4,12,14,6,4,30,26,16,32,18,
%T 22,2,24,12,4,44,24,6,16,14,6,48,16,14,10,38,4,26,18,34,2,4,2,24,30,
%U 70,14,16,14,34,56,22,8,6,58,50,6,84,46,56,16,8,12,52,12,20,70,8,6,10,32,54
%N First differences of A176983.
%C a(n)=2 for n=2,28,47,49,135,173,225,258,375,384,439, A177829.
%Y Cf. A176983, A177829.
%K nonn
%O 1,1
%A _Zak Seidov_, May 14 2010
