%I #11 Feb 11 2017 02:31:57
%S 0,1,1,1,1,0,0,0,1,0,1,1,1,0,0,0,1,0,0,0,0,1,1,1,0,1,0,0,0,1,0,0,1,0,
%T 0,0,0,1,0,0,1,0,1,1,1,0,0,0,1,0,0,0,0,1,1,1,0,1,0,0,0,1,0,0,1,0,0,0,
%U 0,1,1,1,0,1,0,0,0,1,1,1,0,1,1,1,1,0,0
%N Parity of number of runs of 1's in negabinary representation of n.
%C An analog of A268411 in base -2.
%H Peter J. C. Moses, <a href="/A269528/b269528.txt">Table of n, a(n) for n = 0..1999</a>
%H Vladimir Shevelev, <a href="http://arxiv.org/abs/1603.04434">Two analogs of Thue-Morse sequence</a>, arXiv:1603.04434 [math.NT], 2016.
%H Eric Weisstein's World of Mathematics, <a href="http://mathworld.wolfram.com/Negabinary.html">Negabinary</a>
%Y Cf. A039724, A268411.
%K nonn,base
%O 0
%A _Vladimir Shevelev_, Feb 29 2016
%E More terms from _Peter J. C. Moses_, Feb 29 2016