
REFERENCES

W. Ahrens, Mathematische Unterhaltungen und Spiele, Vol. 1, B. G. Teubner, Leipzig, 1921, pp. 363374.
M. R. Engelhardt, A groupbased search for solutions of the nqueens problem, Discr. Math., 307 (2007), 25352551.
R. K. Guy, Unsolved problems in Number Theory, 3rd Edn., Springer, 1994, p. 202 [with extensive bibliography]
I. Rivin, I. Vardi and P. Zimmermann, The nqueens problem, Amer. Math. Monthly, 101 (1994), 629639.
N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).
Ilan Vardi, Computational Recreations in Mathematica, AddisonWesly, 1991, Chapter 6.
