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%I #5 Mar 30 2012 18:56:53
%S 0,0,0,3,6,13,25,45,91,154,322,525,1125,1793,3921,6153,13671,21206,
%T 47718,73359,166800,254607,583947,886171,2047375,3091971,7188451,
%U 10811671,25272481,37877401,88959929,132924649,313498639
%N Number of nonempty subsets of {1,2,...,n} in which exactly 1/3 of the elements are <= (n-2)/2.
%K nonn
%O 1,4
%A _Clark Kimberling_
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