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%I #5 Mar 30 2012 16:52:03
%S 0,1,1,5,30,196,1267,8615,58613,411209,2909597
%N Coefficients of auxiliary tree counting function S_{1,1}(x).
%D Stephan G. Wagner. Subset Counting in Trees. Ars Comb., Vol. 89, 2008, 127-139.
%K nonn
%O 0,4
%A _N. J. A. Sloane_, Oct 02 2011