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A263921
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Number of multisets of n permutations of [n] with the symmetric group acting on the permutation elements.
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2
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1, 1, 2, 10, 762, 1876255, 274382326290, 3265588553925722827, 4299566944396584777543664576, 828675148077536475804944305151462053905, 30068353582978459601855528390398866877243129478172220
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OFFSET
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0,3
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COMMENTS
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The Harary and Palmer text has the generic formulas for power group enumeration.
a(n) is also the number of preference profiles with n alternatives and n agents (IANC model). Egecioglu (2009) contains a general formula. - Alexander Karpov, Dec 15 2017
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REFERENCES
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F. Harary and E. Palmer, Graphical Enumeration, Academic Press, NY, 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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