OFFSET
1,2
REFERENCES
E. R. Berlekamp, J. H. Conway and R. K. Guy, Winning Ways, Academic Press, NY, 2 vols., 1982, see p. 433.
LINKS
Jingzhe Tang, Table of n, a(n) for n = 1..64
CROSSREFS
KEYWORD
nonn,nice
AUTHOR
N. J. A. Sloane, Apr 29 2000
STATUS
approved