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%I #8 Sep 24 2021 07:34:38
%S 1,4,6,7,8,10,13,15,16,18,19,22,24,25,26,28,29,32,34,35,37,40,42,43,
%T 44,46,49,51,52,54,55,58,60,61,63,66,68,69,70,72,73,76,78,79,80,82,85,
%U 87,88,90,91,94,96,97,98,100,101,104,106,107,109,112,114,115
%N Positions of 0 in the {1100->0}-transform of A010060; complement of A284847.
%C a(n) - a(n-1) is in {1,2,3} for n>=2. Conjecture: a(n)/n -> 9/5.
%H Clark Kimberling, <a href="/A284820/b284820.txt">Table of n, a(n) for n = 1..10000</a>
%e The {1100->0}-transform of A010060 begins with the word 011010001011010010011010001..., in which 0 is in positions 1,4,6,7,8,10,...
%t s = Nest[Flatten[# /. {0 -> {0, 1}, 1 -> {1, 0}}] &, {0}, 9] (* A010060 *)
%t w = StringJoin[Map[ToString, s]]
%t w1 = StringReplace[w, {"1100" -> "0"}]
%t st = ToCharacterCode[w1] - 48
%t Flatten[Position[st, 0]] (* A284820 *)
%t Flatten[Position[st, 1]] (* A284847 *)
%Y Cf. A010060, A284792, A284847.
%K nonn,easy
%O 1,2
%A _Clark Kimberling_, May 10 2017
%E Definition corrected by _Georg Fischer_, Sep 24 2021