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%I #7 Apr 25 2016 12:00:16
%S 1,2,3,4,6,8,5,9,12,7,13,11,15,16,10,17,24,14,18,26,21,32,19,33,22,34,
%T 20,36,25,35,27,37,28,39,48,23,38,50,29,49,31,52,30,51,42,55,41,56,40,
%U 58,47,60,64,43,65,44,66,45,53,67,54,68,57,70,46,71,61
%N Lexicographically earliest sequence of distinct positive integers such that the derived sequence (b(n)) = (a(n) XOR a(n+1)) contains only distinct terms (XOR stands for the binary XOR operator).
%H Paul Tek, <a href="/A235262/b235262.txt">Table of n, a(n) for n = 1..10000</a>
%H Paul Tek, <a href="/A235262/a235262.txt">PERL program for this sequence</a>
%o (Perl) See Link section.
%Y Cf. A081145, A235263.
%K nonn
%O 1,2
%A _Paul Tek_, Jan 05 2014
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