%I A048013
%S A048013 0,0,0,0,0,0,0,0,0,0,0,0,9,10,11,55,60,65,195,210,225,525,560,595,1326,
%T A048013 1413,1501,3933,4230,4536,13860,15015,16215,49335,53460,57750,163175,
%U A048013 176345,190035,509067,549094,590759,1580761,1705795
%N A048013 Number of nonempty subsets of {1,2,...,n} in which exactly 4/5 of the 
               elements are <= (n-1)/3.
%Y A048013 Sequence in context: A045522 A054967 A048031 this_sequence A048048 A136835 
               A104627
%Y A048013 Adjacent sequences: A048010 A048011 A048012 this_sequence A048014 A048015 
               A048016
%K A048013 nonn
%O A048013 1,13
%A A048013 Clark Kimberling (ck6(AT)evansville.edu)