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A071509
Sprague-Grundy values for octal games .1777 and .17771.
1
1, 1, 2, 2, 3, 4, 1, 1, 6, 6, 3, 2, 2, 1, 1, 6, 6, 8, 4, 4, 5, 10, 1, 1, 8, 3, 3, 4, 4, 7, 6, 6, 8, 8, 4, 1, 1, 6, 7, 8, 4, 4, 5, 10, 8, 1, 1, 15, 5, 4, 4, 7, 6, 6, 1, 1, 4, 3, 3, 6, 1, 1, 4, 4, 3, 8, 8, 1, 1, 10, 14, 8, 4, 13, 6, 6, 1, 1, 8, 3, 3, 13, 1, 1, 6
OFFSET
1,3
COMMENTS
Octal games .4RZj, R=5,7, Z=4,5,6,7, j=0,1,2,3 have values a(n-1). From [Flammenkamp], sequence is eventually periodic with period 60620715. The last exception is at n=160949017. - Eric M. Schmidt, Feb 22 2017
REFERENCES
E. R. Berlekamp, J. H. Conway and R. K. Guy, Winning Ways, Academic Press, NY, 2 vols., 1982; see Chapter 4.
CROSSREFS
Sequence in context: A071478 A071477 A071507 * A323731 A288248 A159804
KEYWORD
nonn
AUTHOR
N. J. A. Sloane and Sue Pope, May 29 2002
EXTENSIONS
Definition corrected and sequence extended by Eric M. Schmidt, Feb 22 2017
STATUS
approved