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A204810 Langton's ant, symmetrical pattern 4
1, 2, 3, 4, 5, 8, 9, 14, 16, 18, 33, 48, 52, 96, 97, 184, 185, 368, 369, 384, 385, 472, 473 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

The sequence shows the number of steps that Langton's ant needs to create symmetrical patterns.

LINKS

Table of n, a(n) for n=1..23.

Clemens Hovekamp, Langton Ameise, symmetrische Muster

Wikipedia, Langton's ant

CROSSREFS

Sequence in context: A268359 A054181 A163077 * A240080 A194714 A054168

Adjacent sequences:  A204807 A204808 A204809 * A204811 A204812 A204813

KEYWORD

nonn,full,fini

AUTHOR

Clemens Hovekamp, Jan 19 2012

STATUS

approved

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Last modified June 27 07:55 EDT 2017. Contains 288777 sequences.