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.

**References**

Madachy, J. S. *Madachy's Mathematical Recreations.* New York: Dover, pp. 111-112, 1979.

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1999-05-26