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A133046
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Starting from the standard 12 against 12 starting position in checkers, the sequence gives the number of unique move sequences after n moves.
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2
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1, 7, 49, 302, 1469, 7361, 36768, 179740, 845931, 3963680, 18391564, 85242128, 388623673, 1766623630, 7978439499, 36263167175, 165629569428, 758818810990, 3493881706141, 16114043592799, 74545030871553
(list; graph; refs; listen; history; internal format)
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OFFSET
| 0,2
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REFERENCES
| C. A. Pickover, The Math Book, Sterling, NY, 2009; see p. 512.
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LINKS
| A. Bik, Aart's Computer Checkers Page [From Richard Bean (oeis(AT)okuvrumo.fea.st), Sep 18 2009]
M. Fierz, CheckerBoard [From Richard Bean (oeis(AT)okuvrumo.fea.st), Sep 18 2009]
I. Korshunov, Title? [From Richard Bean (oeis(AT)okuvrumo.fea.st), Sep 18 2009]
Jonathan Schaeffer et al., Checkers is solved, Science, Vol. 317. no. 5844, pp. 1518-1522, Sep 14 2007. [From Johannes W. Meijer (meijgia(AT)hotmail.com), June 9 2010]
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CROSSREFS
| Cf. A133047, A055213.
Sequence in context: A188986 A146884 A113235 * A188868 A126639 A171281
Adjacent sequences: A133043 A133044 A133045 * A133047 A133048 A133049
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KEYWORD
| nonn,nice
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AUTHOR
| Jonathan Schaeffer (jonathan(AT)cs.ualberta.ca), Dec 27 2007
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EXTENSIONS
| a(12) - a(20) computed by Aart Bik and sent by Richard Bean (oeis(AT)okuvrumo.fea.st), Sep 18 2009
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