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A038036
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Number of nonisomorphic and nonantiisomorphic rings with n elements.
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7
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1, 2, 2, 10, 2, 4, 2, 46, 10, 4, 2, 20, 2, 4, 4, 316, 2, 20, 2, 20, 4, 4, 2, 92, 10, 4, 53, 20, 2, 8, 2
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OFFSET
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1,2
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COMMENTS
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Number of rings of order n, considered to be equivalent when they are isomorphic or anti-isomorphic (by reversal of the * operator). - Jianing Song, Oct 26 2019
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LINKS
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FORMULA
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CROSSREFS
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KEYWORD
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nonn,hard,more
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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