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A264741
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Number of colorings of an n X n grid with at most three interchangeable colors under rotational and reflectional symmetry.
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3
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1, 1, 6, 490, 901012, 17653123147, 3126972103187548, 4985402694248850150928, 71535079589434063488162675274, 9238051838396620455005158025879826301, 10737031681916902729933722097695167945304711946, 112313143744651950650823741924955687289755947171340131550
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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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