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%I #5 Mar 30 2012 18:56:53
%S 0,0,0,0,1,2,10,30,45,105,213,286,558,1110,1500,3300,7435,10415,23855,
%T 52871,73255,160615,346745,476910,1047438,2299998,3181482,7110522,
%U 15770601,21851202,48767082,107787262,149093417,331877557
%N Number of nonempty subsets of {1,2,...,n} in which exactly 1/5 of the elements are <= n/3.
%K nonn
%O 1,6
%A _Clark Kimberling_
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