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A269350 Kolakoski-(1,8) sequence: a(n) is length of n-th run. 2
1, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 8, 1, 8, 1, 8, 1, 8, 1, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

188888888111111118888888811111111 is prime.

LINKS

Vincenzo Librandi, Table of n, a(n) for n = 1..10000

Michael Baake and Bernd Sing, Kolakoski-(3,1) is a (deformed) model set, arXiv:math/0206098 [math.MG], 2002-2003.

MATHEMATICA

seed = {1, 8}; w = {}; i = 1; Do[w = Join[w, Array[seed[[Mod[i - 1, Length[seed]] + 1]]&, If[i > Length[w], seed, w][[i]]]]; i++, {n, 42}]; w

CROSSREFS

Cf. similar sequences listed in A269268.

Sequence in context: A195141 A171811 A031176 * A195139 A010731 A048762

Adjacent sequences:  A269347 A269348 A269349 * A269351 A269352 A269353

KEYWORD

nonn,easy

AUTHOR

Vincenzo Librandi, Feb 26 2016

STATUS

approved

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Last modified April 24 09:54 EDT 2019. Contains 322420 sequences. (Running on oeis4.)