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%I #5 Mar 30 2012 18:56:53
%S 0,0,0,1,4,8,20,30,63,86,182,245,560,756,1784,2387,5600,7400,17336,
%T 22737,53850,70390,168610,219791,529529,688051,1662907,2154347,
%U 5225636,6754580,16451036,21225758,51878873,66826712
%N Number of nonempty subsets of {1,2,...,n} in which exactly 1/4 of the elements are <= (n-2)/2.
%K nonn
%O 1,5
%A _Clark Kimberling_
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