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Sprague-Grundy values for octal games .1777 and .17771.
1

%I #13 Feb 22 2017 16:22:16

%S 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,

%T 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,

%U 1,1,10,14,8,4,13,6,6,1,1,8,3,3,13,1,1,6

%N Sprague-Grundy values for octal games .1777 and .17771.

%C 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

%D E. R. Berlekamp, J. H. Conway and R. K. Guy, Winning Ways, Academic Press, NY, 2 vols., 1982; see Chapter 4.

%H Eric M. Schmidt, <a href="/A071509/b071509.txt">Table of n, a(n) for n = 1..10000</a>

%H Achim Flammenkamp, <a href="http://wwwhomes.uni-bielefeld.de/achim/octal.html">Sprague-Grundy Values of Octal-Games</a>

%K nonn

%O 1,3

%A _N. J. A. Sloane_ and _Sue Pope_, May 29 2002

%E Definition corrected and sequence extended by _Eric M. Schmidt_, Feb 22 2017