Prefect colouring, 4 colours

T01374 = data171/DFT4
data171/DFT4
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Geometry

For general details about this class of tiling, see.

References

Publications referenced:
  1. of Dirk Frettlöh. Counting perfect colourings of plane regular tilings, Zeitschrift für Kristallographie, 2009. [frettloeh] {To be published} Available on Internet.

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