An -talisman hexagon is an arrangement of nested hexagons containing the integers 1, 2, ..., , where is the th Hex Number, such that the difference between all adjacent hexagons is at least as large as . The hexagon illustrated above is a (3, 5)-talisman hexagon.
See also Hex Number, Magic Square, Talisman Square
Madachy, J. S. Madachy's Mathematical Recreations. New York: Dover, pp. 111-112, 1979.