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%I #4 Mar 30 2012 18:56:54
%S 0,0,0,0,0,0,0,0,35,56,84,252,360,495,1452,2244,3432,11440,18655,
%T 29575,86905,139960,220150,617610,1007216,1616615,4563344,7573970,
%U 12359690,34220634,57059772,93595740,254222289,425926604,703601510
%N Number of nonempty subsets of {1,2,...,n} in which exactly 2/5 of the elements are <= (n-3)/3.
%K nonn
%O 1,9
%A _Clark Kimberling_
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