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%I #3 Mar 30 2012 16:50:24
%S 0,0,0,1,3,0,0,2,5,1,6,0,0,3,7,2,8,1,9,0,0,4,9,3,10,2,11,1,12,0,0,5,
%T 11,4,12,3,13,2,14,1,15,0,0,6,13,5,14,4,15,3,16,2,17,1,18,0
%N Similar to A117136 but begin each row with 0. Equals A117136 - 1.
%K nonn,tabf
%O 0,5
%A _N. J. A. Sloane_, Apr 21 2006
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