%I #4 Apr 25 2017 09:59:35
%S 2,3,4,5,7,10,11,12,14,15,16,18,19,20,21,24,25,26,28,29,30,32,33,34,
%T 35,38,39,40,42,43,44,46,47,48,49,52,53,54,56,57,58,60,61,62,64,65,66,
%U 67,69,72,73,74,76,77,78,80,81,82,84,85,86,87,90,91,92,93
%N Positions of 1 in A285274; complement of A285275.
%C Conjecture: -2 < n*sqrt(2) - a(n) < 1 for n>=1.
%H Clark Kimberling, <a href="/A285276/b285276.txt">Table of n, a(n) for n = 1..10000</a>
%e As a word, A285274 = 011110..., in which 1 is in positions 2,3,4,5,7,10,...
%t s = Nest[Flatten[# /. {0 -> {1, 0}, 1 -> {0, 1, 1, 1}}] &, {0}, 10]; (* A285274 *)
%t Flatten[Position[s, 0]]; (* A285275 *)
%t Flatten[Position[s, 1]]; (* A285276 *)
%Y Cf. A285274, A285277, A285278.
%K nonn,easy
%O 1,1
%A _Clark Kimberling_, Apr 24 2017