Two Remarkable Families of Equilateral Triangles within the Pascal Hexagon - A Triumph for Symmetry

On the Geometry and Combinatorics of the Array of Multinomial Coefficients

by Peter Hilton1 and
Jean Pedersen2

1 State University of New York, Binghamton
Binghamton, New York 13902-6000
2 Santa Clara University
Santa Clara, California 95053