%I A048038
%S A048038 0,1,2,3,9,14,20,55,83,119,329,494,714,2001,3002,4367,12375,18563,
%T A048038 27131,77519,116279,170543,490313,735470,1081574,3124549,4686824,
%U A048038 6906899,20030009,30045014,44352164,129024479,193536719,286097759
%N A048038 Number of nonempty subsets of {1,2,...,n} in which exactly 1/2 of the 
               elements are <= (n+1)/3.
%Y A048038 Sequence in context: A057293 A109662 A116222 this_sequence A113501 A101067 
               A056645
%Y A048038 Adjacent sequences: A048035 A048036 A048037 this_sequence A048039 A048040 
               A048041
%K A048038 nonn
%O A048038 1,3
%A A048038 Clark Kimberling (ck6(AT)evansville.edu)