Escher's Map

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More things to try:

• Busy Beaver 3-states 3-colors
• expand sin 4x
• nine point circle of triangle (1,1)(2,4)(3,3)

Cite this as:

Weisstein, Eric W. "Escher's Map." From MathWorld--A Wolfram Web Resource. https://mathworld.wolfram.com/EschersMap.html

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