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A089457
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Number of n-celled polyominoes with exactly 5 holes.
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4
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 21, 573, 9140, 105417, 982767, 7919375, 57387444
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OFFSET
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1,20
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LINKS
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CROSSREFS
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KEYWORD
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hard,nonn
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AUTHOR
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STATUS
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approved
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