Consider intersecting circles. The maximal number of regions into which these divide the plane are

giving values for , 2, ... of 2, 4, 8, 14, 22, 32, 44, 58, ... (Sloane's A014206).

Indiana School Mathematics J. 14, No. 4, p. 4, 1979.

Konhauser, J. D. E.; Velleman, D.; and Wagon, S. Which Way Did the Bicycle Go? And Other Intriguing Mathematical Mysteries. Washington, DC: Math. Assoc. Amer., p. 177, 1996.

Problem Q736. Parabola 24, 22, 1988.

Sloane, N. J. A. Sequence A014206 in "The On-Line Encyclopedia of Integer Sequences."

Yaglom, A. M. and Yaglom, I. M. Challenging Mathematical Problems with Elementary Solutions, Vol. 1. New York: Dover, pp. 102-106, 1987.

CITE THIS AS:

Weisstein, Eric W. "Plane Division by Circles." From MathWorld--A Wolfram Web Resource. http://mathworld.wolfram.com/PlaneDivisionbyCircles.html