patterns, types, type shifting patterns, composite patterns, globular patterns, large pixel art, colour rectangles, coloured square diagrams, short prose, poetry, abstract art, free thinking, inventor, original, number theory, tiling patterns, four regions of natural numbers, fuzzy thinking, Zen, yin yang philosophy, math art
Thursday 19 March 2015
trominoes
the straight trominoes can be packed in a 3 by n rectangle in various ways
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