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 A288672 Positions of 1 in A288670; complement of A288671. 3

%I

%S 2,3,6,7,10,15,16,19,20,23,28,33,42,43,46,47,50,51,54,59,60,63,64,67,

%T 72,77,86,87,90,95,104,105,108,113,122,123,130,131,138,139,142,143,

%U 146,147,150,155,156,159,160,163,168,169,172,173,176,181,186,195

%N Positions of 1 in A288670; complement of A288671.

%C Conjecture: a(n)/n->3.39..., and if m denotes this number, then -1 < m - a(n)/n) < 2 for n >= 1.

%H Clark Kimberling, <a href="/A288672/b288672.txt">Table of n, a(n) for n = 1..10000</a>

%t s = {0, 0}; w[0] = StringJoin[Map[ToString, s]];

%t w[n_] := StringReplace[w[n - 1], {"00" -> "0110", "10" -> "000"}]

%t Table[w[n], {n, 0, 8}]

%t st = ToCharacterCode[w[13]] - 48 (* A288670 *)

%t Flatten[Position[st, 0]] (* A288671 *)

%t Flatten[Position[st, 1]] (* A288672 *)

%Y Cf. A288670, A288671.

%K nonn,easy

%O 1,1

%A _Clark Kimberling_, Jun 15 2017

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Last modified January 23 13:57 EST 2022. Contains 350511 sequences. (Running on oeis4.)