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A075208
Number of polyhexes with n cells that tile the plane by translation but not by 180-degree rotation (Conway criterion).
+0
11
0, 0, 0, 0, 0, 0, 1, 1, 14, 30, 88, 929, 989, 3859, 16557, 35017, 46506, 256901, 256721, 1286189, 2306003
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Maintained by
N. J. A. Sloane
(
njas@research.att.com
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Last modified November 30 13:13 EST 2009. Contains 167758 sequences.
AT&T Labs Research
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