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Search: id:A030227
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| A030227 |
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Number of n-celled polyominoes with bilateral symmetry. |
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2
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| 1, 1, 2, 3, 6, 10, 20, 34, 70, 121, 250, 441, 912, 1630, 3375, 6092, 12624, 22961, 47616, 87136, 180811, 332549
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