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A268666
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Number of polycubes with n cells, allowing edge connections as well as face connections, identifying mirror images.
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7
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OFFSET
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1,2
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LINKS
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EXAMPLE
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a(2) = 2 because there are two ways to join two cells in the cubic grid at faces or edges.
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CROSSREFS
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KEYWORD
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nonn,more,nice,hard
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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