Map Coloring

Author

Eric W. Weisstein
March 3, 2005

This notebook downloaded from http://mathworld.wolfram.com/notebooks/Topology/MapColoring.nb.

For more information, see Eric's MathWorld entry http://mathworld.wolfram.com/MapColoring.html.

©2005 Wolfram Research, Inc. except for portions noted otherwise

Heawood Number

Floor[(1/2)(7+(Sqrt[49-24#]))]&/@{0,1,2,1,2,0}