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A089455
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Number of n-celled polyominoes with exactly 3 holes.
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4
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 3, 69, 798, 7021, 51775, 339958, 2053872, 11665593, 63192945, 329798278, 1670466031, 8256762365, 39992202198
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OFFSET
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1,14
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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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