@graveolens Also, I'd say the standard definitions of polyforms consider reflected forms equivalent, unless "one-sided" is explicitly added.
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@two_star I am counting them as separate cases because hyperbolic reflection is tricky. - 1 more reply
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@graveolens This page: http://www.ieeta.pt/~tos/animals.html … claims to be looking at this problem, but it seems they haven't gotten past polyominoes yet.Thanks. Twitter will use this to make your timeline better. UndoUndo
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