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A230367
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Number of colorings of the edges of the complete graph on n unlabeled vertices using at most three interchangeable colors under the symmetries of the full edge permutation group.
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2
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1, 3, 15, 142, 4300, 384199, 98654374, 70130880569, 136638863494089, 730439999032117301, 10764688922047900738650, 439762062635963206090747374, 50066701349010686289507943943535, 15962815411172611585301863116082363362, 14314975828662356561039590680011420432741442, 36247244119877673111912410070361564495415461430358
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OFFSET
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2,2
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REFERENCES
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Harary and Palmer, Graphical Enumeration, Chapter Six.
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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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