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A048081 Number of nonempty subsets of {1,2,...,n} in which exactly 5/6 of the elements are <= (n+2)/3. 0

%I #4 Mar 30 2012 18:56:54

%S 0,0,0,0,0,0,0,0,0,0,0,0,8,9,10,60,66,72,252,273,294,784,840,896,2016,

%T 2142,2268,4689,4959,5230,11330,12012,12705,32670,34914,37224,109824,

%U 117975,126412,377377,405405,434434,1222494,1309959

%N Number of nonempty subsets of {1,2,...,n} in which exactly 5/6 of the elements are <= (n+2)/3.

%K nonn

%O 1,13

%A _Clark Kimberling_

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Last modified April 24 20:08 EDT 2024. Contains 371963 sequences. (Running on oeis4.)