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A264743
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Number of colorings of an n X n grid with at most five interchangeable colors under rotational and reflectional symmetry.
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2
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1, 1, 7, 2507, 159474576, 310449924192274, 15158246594803814603992, 18503717079578845504700363135614, 564688631502902660289311507800712928484099, 430823235704701918614551410484249550325198643935836342
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OFFSET
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0,3
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REFERENCES
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F. Harary and E. Palmer, Graphical Enumeration, Academic Press, 1973.
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LINKS
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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STATUS
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approved
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