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A288742 Positions of 0 in A288741; complement of A285697. 3
1, 3, 6, 7, 8, 9, 11, 14, 17, 20, 21, 22, 23, 25, 28, 29, 30, 31, 33, 36, 39, 42, 45, 48, 49, 50, 51, 53, 56, 57, 58, 59, 61, 64, 67, 70, 71, 72, 73, 75, 78, 79, 80, 81, 83, 86, 89, 92, 95, 98, 101, 104, 105, 106, 107, 109, 112, 113, 114, 115, 117, 120, 123 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Conjecture:  a(n)/n  -> 2, and 0 < 2 - a(n)/n) < 1 for n >= 1.

LINKS

Clark Kimberling, Table of n, a(n) for n = 1..10000

MATHEMATICA

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

w[n_] := StringReplace[w[n - 1], {"00" -> "1000", "10" -> "01"}]

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

st = ToCharacterCode[w[23]] - 48   (* A288741 *)

Flatten[Position[st, 0]]  (* A288742 *)

Flatten[Position[st, 1]]  (* A285697 *)

CROSSREFS

Cf. A288741, A285697.

Sequence in context: A073417 A299493 A047559 * A113826 A053030 A189822

Adjacent sequences:  A288739 A288740 A288741 * A288743 A288744 A288745

KEYWORD

nonn,easy

AUTHOR

Clark Kimberling, Jun 17 2017

STATUS

approved

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Last modified April 24 22:26 EDT 2019. Contains 322446 sequences. (Running on oeis4.)