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A291795 Consider Post's tag system applied to the word (100)^n; a(n) = length of the longest word in the orbit, or -1 if the orbit is unbounded. 11
6, 16, 16, 22, 56, 34, 176, 76, 62, 208, 62, 208, 68, 768, 104, 88, 106, 224, 146, 134, 226, 172, 132, 4432, 206, 232, 378, 206, 432, 380, 208, 290, 1336, 224, 280, 1152, 336, 210, 1190, 356, 386, 292, 254, 806, 324, 362, 278, 316, 610, 1968, 710, 628, 10434 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Lars Blomberg, Table of n, a(n) for n = 1..6075

Peter R. J. Asveld, On a Post's System of Tag. Bulletin of the EATCS 36 (1988), 96-102.

CROSSREFS

Cf. A284116 and the cross-references there.

Sequence in context: A085452 A028286 A046629 * A301831 A183127 A222884

Adjacent sequences:  A291792 A291793 A291794 * A291796 A291797 A291798

KEYWORD

nonn

AUTHOR

N. J. A. Sloane, Sep 04 2017

EXTENSIONS

a(33) and beyond from Lars Blomberg, Apr 19 2018

STATUS

approved

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Last modified July 18 10:35 EDT 2019. Contains 325138 sequences. (Running on oeis4.)