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%I #4 Mar 30 2012 18:56:54
%S 0,0,0,0,0,0,0,0,0,21,28,36,144,180,220,550,660,780,2275,2821,3465,
%T 13230,16940,21420,74256,94248,118104,367080,461700,574644,1824690,
%U 2310000,2899380,9684840,12357532,15634300,51798175,66098175
%N Number of nonempty subsets of {1,2,...,n} in which exactly 3/5 of the elements are <= (n-1)/3.
%K nonn
%O 1,10
%A _Clark Kimberling_
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