%I A121701
%S A121701 1,1,2,3,4,2,5,3,6,4,7,8,9,5,10,11,12,6,13,14,15,7,16,8,17,9,18,19,20,
%T A121701 10,21,11,22,12,23,24,25,13,26,14,27,15,28,29,30,16,31,32,33,17,34,35,
%U A121701 36,18,37,19,38,20,39,40,41,21,42,43,44,22,45,46,47,23,48,24,49,25,50
%N A121701 Lexicographically smallest sequence such that a(m)<>a(n) for all m with 
               m<>n except either for m=2*n or n=2*m.
%C A121701 a(4*n-2) = a(2*n-1): a(A016825(n)) = a(A005408(n));
%C A121701 a(2*A003159(n)) = a(A003159(n));
%C A121701 if a(m)=a(n) with m<n then A035263(m)=1 and A035263(n)=0.
%Y A121701 Sequence in context: A117826 A075994 A100798 this_sequence A161759 A157000 
               A026346
%Y A121701 Adjacent sequences: A121698 A121699 A121700 this_sequence A121702 A121703 
               A121704
%K A121701 nonn
%O A121701 1,3
%A A121701 Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), Aug 16 2006