%I #4 Jun 29 2008 03:00:00
%S 1,2,4,4,4,6,8,6,7,8,11,11,11,11,12,10,12,11,15,13,13,18,18,17,16,17,
%T 19,17
%N Duplicate of A023819.
%K dead
%O 1,2