%I A073139
%S A073139 0,0,0,0,0,1,1,0,0,3,3,3,3,3,3,0,0,7,7,9,7,9,9,7,7,9,9,7,9,7,7,0,0,15,
%T A073139 15,21,15,21,21,21,15,21,21,21,21,21,21,15,15,21,21,21,21,21,21,15,21,
%U A073139 21,21,15,21,15,15,0,0,31,31,45,31,45,45,49,31,45,45,49,45,49,49,45,31
%N A073139 Difference between the largest and smallest number having in binary representation 
               the same number of 0's and 1's as n.
%C A073139 a(n) = A073138(n) - A073137(n).
%H A073139 <a href="Sindx_Bi.html#binary">Index entries for sequences related to 
               binary expansion of n</a>
%Y A073139 Cf. A007088, A073140, A073141.
%Y A073139 Sequence in context: A031355 A097675 A141605 this_sequence A122845 A135203 
               A102818
%Y A073139 Adjacent sequences: A073136 A073137 A073138 this_sequence A073140 A073141 
               A073142
%K A073139 nonn
%O A073139 0,10
%A A073139 Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), Jul 16 2002