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A288479 Positions of 0 in A288478; complement of A288480. 3
1, 4, 7, 8, 11, 14, 15, 17, 21, 24, 25, 28, 31, 32, 34, 38, 39, 42, 45, 48, 49, 52, 55, 56, 58, 62, 65, 66, 69, 72, 73, 75, 79, 80, 83, 86, 89, 90, 92, 96, 99, 100, 103, 106, 107, 110, 113, 114, 116, 120, 123, 124, 127, 130, 131, 133, 137, 138, 141, 144, 147 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

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

LINKS

Clark Kimberling, Table of n, a(n) for n = 1..10000 [term a(9802) - was 23662 - and following corrected by Georg Fischer, Jun 04 2020]

MATHEMATICA

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

w[n_] := StringReplace[w[n - 1], {"00" -> "0101", "1" -> "110"}]

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

st = ToCharacterCode[w[13]] - 48   (* A288478 *)

Flatten[Position[st, 0]]  (* A288479 *)

Flatten[Position[st, 1]]  (* A288480 *)

CROSSREFS

Cf. A288478, A288480

Sequence in context: A319926 A128373 A080578 * A047347 A188376 A137362

Adjacent sequences:  A288476 A288477 A288478 * A288480 A288481 A288482

KEYWORD

nonn,easy

AUTHOR

Clark Kimberling, Jun 12 2017

STATUS

approved

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Last modified April 23 05:34 EDT 2021. Contains 343199 sequences. (Running on oeis4.)