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Single Curio View: (Seek other curios for this number) There are 2339 ways to arrange the set of twelve pentominoes into a 6by10 rectangle, excluding trivial variations obtained by rotation and reflection of the whole rectangle, but including rotation and reflection of a subset of pentominoes. This case was first solved in 1960 by C. B. Haselgrove and Jenifer Haselgrove (now Jenifer Leech).
Submitted: 20020419 00:51:28; Last Modified: 20091112 16:35:45.
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