A048037 - OEIS

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A048037

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

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

%S 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,13,14,15,90,96,102,357,378,399,

%T 1064,1120,1176,2646,2772,2898,6049,6324,6600,14850,15587,16335,44550,

%U 47124,49764,153439,163020,172887,527527,560560,594594

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

%K nonn

%O 1,18

%A _Clark Kimberling_