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A144554
Number of polyominoes with n cells whose symmetry group (excluding reflections) has order at least 2.
+0
10
1, 1, 1, 3, 3, 7, 8, 25, 25, 82, 85, 302, 307, 1111, 1131, 4216, 4267, 16076, 16253, 61976, 62475, 239927, 241447, 933576, 937574, 3644073, 3653624
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Maintained by
N. J. A. Sloane
(
njas@research.att.com
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Last modified December 19 12:50 EST 2009. Contains 171053 sequences.
AT&T Labs Research
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