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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.
12
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
OFFSET
1,1
LINKS
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
KEYWORD
nonn
AUTHOR
N. J. A. Sloane, Sep 04 2017
EXTENSIONS
a(33) and beyond from Lars Blomberg, Apr 19 2018
STATUS
approved