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A285618 Positions of 0 in A285617; complement of A285619. 3

%I

%S 2,3,4,12,13,14,16,17,18,20,21,22,24,25,26,28,29,30,32,33,34,36,37,38,

%T 46,47,48,56,57,58,66,67,68,76,77,78,86,87,88,96,97,98,106,107,108,

%U 110,111,112,114,115,116,118,119,120,122,123,124,126,127,128,130

%N Positions of 0 in A285617; complement of A285619.

%C Conjecture: a(n)/n -> 2.

%H Clark Kimberling, <a href="/A285618/b285618.txt">Table of n, a(n) for n = 1..10000</a>

%e As a word, A285617 = 1000111111100010001001..., in which 0 is in positions 2,3,4,12,...

%t s = Nest[Flatten[# /. {0 -> {1, 1}, 1 -> {1, 0, 0, 0}}] &, {0}, 10] (* A285617 *)

%t Flatten[Position[s, 0]] (* A285618 *)

%t Flatten[Position[s, 1]] (* A285619 *)

%Y Cf. A285617, A285619.

%K nonn,easy

%O 1,1

%A _Clark Kimberling_, May 01 2017

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Last modified October 28 13:15 EDT 2020. Contains 338055 sequences. (Running on oeis4.)