5-omino, order 21, [7 by 15]
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For general details about this class of tiling, see.
- The polyomino is not reflective.
- The tile is a 5-omino.
- The rectangle is 7*15 (ratio: 2.142857142857143).
- From Erich Friedman's web site (Actual order 2) of Not specific. Personal Communication, Information sent to the author, 21c. [pc]