21-omino, order 4, [7 by 12]

T00710 = data113/K41
data113/K41
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Geometry

For general details about this class of tiling, see.

References

Publications referenced:
  1. (From Karl Dahlke, June 1999) of B A Wichmann. The World of Patterns, World Scientific, 2001. ISBN 981024619. [wich2] {Only new patterns ascribed to this.}

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