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Search: id:A071431
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| A071431 |
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Sprague-Grundy values for octal game .17. |
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+0
1
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| 0, 1, 1, 0, 2, 1, 3, 0, 1, 1, 3, 2, 2, 3, 4, 1, 5, 3, 2, 2, 3, 1, 1, 0, 3, 1, 2, 0, 1, 1, 4, 4, 2, 6, 4, 1, 1, 0, 2, 1, 3, 0, 1, 1, 3, 2, 2, 3, 4, 4, 5, 7, 2, 2, 3, 1, 1, 0, 3, 1, 2, 0, 1, 1, 4, 4, 3, 6, 4, 1, 1, 0, 2, 1, 3, 0, 1, 1, 3, 2, 2, 3, 4, 4, 5, 7, 2, 2, 3, 1, 1, 0, 3, 1, 2, 0, 1, 1, 4, 4, 3
(list; graph; listen)
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OFFSET
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0,5
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COMMENT
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Sequence is eventually periodic with period 34. The only exceptions are n=0, 15, 17 and 32.
Winning Ways, p. 93 erroneously states that for odd n a(n)=A002187(n-1) xor 1. The first exception to this rule is n=49 and many others follow.
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REFERENCES
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E. R. Berlekamp, J. H. Conway and R. K. Guy, Winning Ways, Academic Press, NY, 2 vols., 1982; see Chapter 4, p. 93.
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LINKS
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Achim Flammenkamp, Octal games
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CROSSREFS
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Sequence in context: A002431 A062963 A127139 this_sequence A140699 A140256 A126206
Adjacent sequences: A071428 A071429 A071430 this_sequence A071432 A071433 A071434
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KEYWORD
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nonn
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AUTHOR
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njas and Sue Pope (pope(AT)research.att.com), May 29 2002
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EXTENSIONS
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More terms from Joseph S. Myers (jsm(AT)polyomino.org.uk), Jun 04, 2002
Edited by Christian G. Bower (bowerc(AT)usa.net), Oct 23 2002
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