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A127707
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Number of commutative rings with 1 containing n elements.
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12
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1, 1, 1, 4, 1, 1, 1, 10, 4, 1, 1, 4, 1, 1, 1, 37, 1, 4, 1, 4, 1, 1, 1, 10, 4, 1, 11, 4, 1, 1, 1, 109, 1, 1, 1, 16, 1, 1, 1, 10, 1, 1, 1, 4, 4, 1, 1, 37, 4, 4, 1, 4, 1, 11, 1, 10, 1, 1, 1, 4, 1, 1, 4
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OFFSET
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1,4
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COMMENTS
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Is this a multiplicative function?
Answer: yes! See the Eric M. Rains link for a proof for the result for all unital rings; restricting to commutative rings does not affect the essence of the proof. - Jianing Song, Feb 02 2020
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LINKS
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FORMULA
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CROSSREFS
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KEYWORD
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more,nice,nonn,mult
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AUTHOR
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Hugues Randriam (randriam(AT)enst.fr), Jan 24 2007
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EXTENSIONS
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STATUS
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approved
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