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A057983 These numbers take a record number of steps to reach the top of the deck in Guy's shuffle (see A035485). 6
1, 2, 3, 4, 7, 13, 15, 39, 43, 54, 1227, 1796, 2674, 3464, 6057, 7650, 17083 (list; graph; refs; listen; history; text; internal format)
OFFSET
0,2
COMMENTS
See A057984 for the number of steps for these to reach the top of the deck.
REFERENCES
D. Gale, Tracking the Automatic Ant and Other Mathematical Explorations, Springer, 1998, chapter 5.
D. Gale, Mathematical Entertainments: "Careful Card-Shuffling and Cutting Can Create Chaos," The Mathematical Intelligencer, vol. 14, no. 1, 1992, pages 54-56.
LINKS
EXAMPLE
In Guy's shuffle, 4 takes 8 shuffles to reach the top, no smaller number takes more shuffles, so 4 is in the sequence.
CROSSREFS
Sequence in context: A285222 A023162 A022437 * A200088 A004783 A031149
KEYWORD
hard,nonn
AUTHOR
Jud McCranie, Oct 24 2000
STATUS
approved

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Last modified April 22 22:30 EDT 2024. Contains 371906 sequences. (Running on oeis4.)