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%I #4 Mar 30 2012 18:56:18
%S 1,0,0,0,0,1,1,2,3,4,3,4,4,5,5,6,6,5,5,4,5,4,3,2,2,1,1,0,0,0,0,0,1,1,
%T 0,0,0,0,0,0,0,0,0,0,1,1,0,0,0,0,0,0,0,0,0,0,1,1,0,0,0,0,0,0,0,1,1,1,
%U 2,2,3,4,4,3,4,4,4,5,5,5,6,6,6,7,8,8,9,10,11
%N a(n)=(# 1's)-(# 2's) in first n terms of A030548.
%K nonn
%O 1,8
%A _Clark Kimberling_
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