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%I #5 Jun 10 2016 10:34:13
%S 1,2,3,3,4,5,5,6,6,7,7,8,9,9,10,10,11,11,12,12,13,13,14,14,15,15,16,
%T 17,17,18,18,19,19,20,20,21,21,22,22,23,23,24,24,25,25,26,26,27,27,28,
%U 28,29,29,30,30,31,31,32,33,33,34,34,35,35,36,36,37,37,38,38,39,39,40,40
%N Numbers repeated except that powers of 2 only appear once.
%Y Conjectured to be (essentially) the first differences of A002960.~
%K nonn
%O 1,2
%A _N. J. A. Sloane_, Jun 10 2016
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