%I #3 Nov 10 2007 03:00:00
%S 1,1,2,2,3,4,3,5,4,6,7,5,8,6,9,7,10,11,8,12,9,13,14,10,15,11,16,12,17
%N Duplicate of A091524.
%K dead
%O 1,3