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A291796 Consider Post's tag system applied to the word (100)^n; a(n) = position of the longest word in the orbit, or -1 if the orbit is unbounded. 10
3, 14, 9, 16, 97, 34, 1293, 400, 91, 1734, 49, 1532, 51, 18168, 271, 78, 395, 674, 265, 260, 2701, 1068, 143, 935110, 2949, 1664, 2781, 2874, 9883, 3186, 1313, 996, 109875, 406, 5949, 57480, 15941, 258, 32359, 4712, 1223, 2424, 469, 35722, 1481, 1508, 395, 662 (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: A127818 A320261 A187772 * A155886 A319456 A222713

Adjacent sequences:  A291793 A291794 A291795 * A291797 A291798 A291799

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 15 22:48 EDT 2019. Contains 325061 sequences. (Running on oeis4.)