A125915 Sprague-Grundy values for octal game .147.

1, 0, 1, 2, 2, 2, 4, 4, 1, 1, 1, 2, 2, 2, 4, 4, 1, 1, 1, 2, 2, 2, 4, 4, 1, 1, 1, 2, 2, 2, 4, 4, 1, 1, 1, 2, 2, 2, 4, 4, 1, 1, 1, 2, 2, 2, 4, 4, 1, 1, 1, 2, 2, 2, 4, 4, 1, 1, 1, 2, 2, 2, 4, 4, 1, 1, 1, 2, 2, 2, 4, 4, 1, 1, 1, 2, 2, 2, 4, 4, 1, 1, 1, 2, 2, 2, 4, 4, 1, 1, 1, 2, 2, 2, 4, 4, 1, 1, 1, 2, 2, 2, 4, 4, 1, 1

Offset

1,4

Comments

Octal games .544, .545, .546 and .547 also have values a(n).

The sequence is eventually periodic with period 8. The last exception is at n=2.

References

E. R. Berlekamp, J. H. Conway and R. K. Guy, Winning Ways, Academic Press, NY, 2 vols., 1982; see Chapter 4, p. 104.

Links

Table of n, a(n) for n=1..106.

Index entries for linear recurrences with constant coefficients, signature (0, 0, 0, 0, 0, 0, 0, 1).

Mathematica

Join[{1, 0}, LinearRecurrence[{0, 0, 0, 0, 0, 0, 0, 1}, {1, 2, 2, 2, 4, 4, 1, 1}, 104]] (* Ray Chandler, Aug 25 2015 *)

Crossrefs

Sequence in context: A228796 A155837 A096445 * A071472 A367120 A064135

Adjacent sequences: A125912 A125913 A125914 * A125916 A125917 A125918

Keyword

nonn

Author

Richard Sabey, Jan 24 2007

Extensions

Extended by Ray Chandler, Aug 25 2015

Status

approved