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%I #5 Mar 30 2012 18:56:53
%S 0,0,0,0,0,4,10,20,60,105,168,364,588,930,2250,3960,6820,17380,30745,
%T 52507,126763,219765,372120,898380,1572228,2702252,6619596,11666760,
%U 20167170,49146654,86461704,149465844,363087604,639438019
%N Number of nonempty subsets of {1,2,...,n} in which exactly 2/5 of the elements are <= n/3.
%K nonn
%O 1,6
%A _Clark Kimberling_
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