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%I #5 Mar 30 2012 18:56:53
%S 0,0,0,1,2,8,12,30,40,86,110,245,315,756,980,2387,3080,7400,9480,
%T 22737,29040,70390,89870,219791,280423,688051,876603,2154347,2741102,
%U 6754580,8586788,21225758,26965808,66826712
%N Number of nonempty subsets of {1,2,...,n} in which exactly 1/4 of the elements are <= (n-1)/2.
%K nonn
%O 1,5
%A _Clark Kimberling_
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