A127707 - OEIS

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A127707

Number of commutative rings with 1 containing n elements.

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 (list; graph; refs; listen; history; text; internal format)

	OFFSET	`1,4`
	COMMENTS	`Is this a multiplicative function?`
	LINKS	`Table of n, a(n) for n=1..31.` `C. Noebauer, Home page [broken link]`
	CROSSREFS	`Cf. A037289, A037291, A127708.` `Sequence in context: A008477 A222639 A184729 * A113196 A037291 A222317` `Adjacent sequences: A127704 A127705 A127706 * A127708 A127709 A127710`
	KEYWORD	`more,nice,nonn`
	AUTHOR	`Hugues Randriam (randriam(AT)enst.fr), Jan 24 2007`
	STATUS	`approved`

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Last modified May 20 02:57 EDT 2013. Contains 225446 sequences.