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A057418
Number of n-celled polyominoes with 1 hole.
+0
6
1, 6, 37, 195, 975, 4622, 21128, 94109, 410820, 1766591, 7506179, 31596240, 131991619, 547992183, 2263477612, 9309386178, 38150082057, 155859235424, 635067478628, 2581737704039
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Maintained by
N. J. A. Sloane
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njas@research.att.com
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Last modified November 29 12:46 EST 2009. Contains 167659 sequences.
AT&T Labs Research
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