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A071820 Kolakoski-(2,3) sequence: a(n) is length of n-th run. 7
2, 2, 3, 3, 2, 2, 2, 3, 3, 3, 2, 2, 3, 3, 2, 2, 3, 3, 3, 2, 2, 2, 3, 3, 3, 2, 2, 3, 3, 2, 2, 2, 3, 3, 3, 2, 2, 3, 3, 2, 2, 2, 3, 3, 3, 2, 2, 2, 3, 3, 2, 2, 3, 3, 2, 2, 2, 3, 3, 3, 2, 2, 2, 3, 3, 2, 2, 3, 3, 3, 2, 2, 2, 3, 3, 2, 2, 3, 3, 2, 2, 2, 3, 3, 3, 2, 2, 2, 3, 3, 2, 2, 3, 3, 3, 2, 2, 2, 3, 3, 2, 2, 3, 3, 2 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
LINKS
Michael Baake and Bernd Sing, Kolakoski-(3,1) is a (deformed) model set, arXiv:math/0206098 [math.MG], 2002-2003.
Ulrich Reitebuch, Henriette-Sophie Lipschütz, and Konrad Polthier, Visualizing the Kolakoski Sequence, Bridges Conf. Proc.; Math., Art, Music, Architecture, Culture (2023) 481-484.
MATHEMATICA
seed = {2, 3};
w = {};
i = 1;
Do[
w = Join[w,
Array[seed[[Mod[i - 1, Length[seed]] + 1]] &,
If[i > Length[w], seed, w][[i]]]];
i++
, {n, 43}];
w
(* Ivan Neretin, Apr 01 2015 *)
CROSSREFS
Sequence in context: A271099 A344259 A165299 * A055092 A213202 A234972
KEYWORD
nonn,easy
AUTHOR
EXTENSIONS
More terms from Antonio G. Astudillo (afg_astudillo(AT)hotmail.com), Sep 08 2002
STATUS
approved

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Last modified June 23 17:30 EDT 2024. Contains 373653 sequences. (Running on oeis4.)