An Matrix
defined as follows,
See also Circulant Determinant
References
Davis, P. J. Circulant Matrices, 2nd ed. New York: Chelsea, 1994.
Stroeker, R. J. ``Brocard Points, Circulant Matrices, and Descartes' Folium.'' Math. Mag. 61, 172-187, 1988.
Vardi, I. Computational Recreations in Mathematica. Reading, MA: Addison-Wesley, p. 114, 1991.