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A035499 Turns at which card 1 surfaces in Guy's shuffling problem (A035485). 1
0, 3, 7, 50, 93, 307, 832, 3345, 7438, 32327, 12165645, 861940477, 2151642067, 29933164804, 39288453372, 713937018048, 4426276078818, 19966143995933 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

REFERENCES

D. Gale, Mathematical Entertainments: "Careful Card-Shuffling and Cutting Can Create Chaos," Mathematical Intelligencer, vol. 14, no. 1, 1992, pages 54-56.

D. Gale, Tracking the Automatic Ant and Other Mathematical Explorations, A Collection of Mathematical Entertainments Columns from The Mathematical Intelligencer, Springer, 1998.

LINKS

Table of n, a(n) for n=0..17.

MATHEMATICA

Position[ NestList[ riguy, {}, 64 ], 1 ]; Transpose[ % ][ [ 2 ] ] // See A035490.

CROSSREFS

Cf. A035485, A035490-A035494. Gives terms where 1's appear in A035492.

Sequence in context: A118393 A113775 A113236 * A273092 A120788 A207138

Adjacent sequences:  A035496 A035497 A035498 * A035500 A035501 A035502

KEYWORD

nonn,nice

AUTHOR

N. J. A. Sloane, Wouter Meeussen

EXTENSIONS

More terms from David W. Wilson; and later from Jud McCranie, Oct 22 2000

a(15)-a(17) from Mark R. Diamond, Apr 20 2014

STATUS

approved

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Last modified February 25 13:30 EST 2018. Contains 299654 sequences. (Running on oeis4.)