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A287795 {0->101, 1->010}-transform of the infinite Fibonacci word A003849. 2

%I #4 Jun 03 2017 15:27:56

%S 1,0,1,0,1,0,1,0,1,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,1,0,1,0,1,0,1,0,1,1,

%T 0,1,0,1,0,1,0,1,0,1,0,1,0,1,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,1,0,1,0,1,

%U 0,1,0,1,1,0,1,0,1,0,1,0,1,0,1,0,1,0

%N {0->101, 1->010}-transform of the infinite Fibonacci word A003849.

%C a(n) = 1 - A287773(n) for n >= 1.

%H Clark Kimberling, <a href="/A287795/b287795.txt">Table of n, a(n) for n = 1..10000</a>

%e As a word, A003849 = 0100101001001010010100100..., and replacing each 0 by 101 and each 1 by 010 gives 10101010110101010101010110101010110...

%t s = Nest[Flatten[# /. {0 -> {0, 1}, 1 -> {0}}] &, {0}, 10] (* A003849 *)

%t w = StringJoin[Map[ToString, s]]

%t w1 = StringReplace[w, {"0" -> "101", "1" -> "010"}]

%t st = ToCharacterCode[w1] - 48 (* A287795 *)

%t Flatten[Position[st, 0]] (* A287777 *)

%t Flatten[Position[st, 1]] (* A287774 *)

%Y Cf. A287774, A287777, A287773 (binary complement).

%K nonn,easy

%O 1

%A _Clark Kimberling_, Jun 03 2017

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Last modified August 7 17:47 EDT 2024. Contains 375017 sequences. (Running on oeis4.)