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A289009 Positions of 1 in A289007; complement of A289008. 4
3, 6, 7, 10, 12, 13, 16, 19, 21, 22, 25, 28, 31, 32, 33, 35, 36, 39, 42, 45, 46, 49, 50, 52, 53, 54, 56, 57, 60, 63, 66, 67, 70, 72, 73, 76, 78, 79, 80, 81, 83, 84, 85, 87, 88, 91, 94, 97, 98, 101, 103, 104, 107, 110, 112, 113, 116, 119, 120, 121, 123, 124 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Conjecture: a(n)/n -> 1.75..., and if m denotes this number, then -2 < m - a(n)/n < 0 for n >= 1.

LINKS

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

MATHEMATICA

z = 11; (* number of iterates *)

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

w[n_] := StringReplace[w[n - 1], {"00" -> "0010", "01" -> "001", "10" -> "011"}]

TableForm[Table[w[n], {n, 0, 10}]]

st = ToCharacterCode[w[z]] - 48   (* A289007 *)

Flatten[Position[st, 0]]  (* A289008 *)

Flatten[Position[st, 1]]  (* A289009 *)

CROSSREFS

Cf. A289007, A289008.

Sequence in context: A138622 A080147 A192593 * A084463 A096604 A184873

Adjacent sequences:  A289006 A289007 A289008 * A289010 A289011 A289012

KEYWORD

nonn,easy

AUTHOR

Clark Kimberling, Jun 26 2017

STATUS

approved

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Last modified November 26 11:14 EST 2022. Contains 358359 sequences. (Running on oeis4.)