A037292 - OEIS

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A037292

Number of nonassociative rings with n elements.

1, 2, 2, 55, 2, 4, 2, 801288, 165, 4, 2, 110, 2, 4, 4 (list; graph; refs; listen; history; internal format)

	OFFSET	`1,2`
	COMMENTS	`The standard definition of a ring requires that multiplication be associative, so these are very nonstandard rings.` `The rings need not contain a multiplicative unit.` `This sequence may be multiplicative. - Mitch Harris, Apr 19 2005`
	CROSSREFS	`Cf. A027623.` `Sequence in context: A156467 A015167 A086204 * A187024 A028372 A130678` `Adjacent sequences: A037289 A037290 A037291 * A037293 A037294 A037295`
	KEYWORD	`nonn`
	AUTHOR	`Christian G. Bower (bowerc(AT)usa.net), Jun 15 1998. In fact more is known:`
	EXTENSIONS	`1,2,2,55,2,4,2,801288,165,4,2,110,2,4,4,?,2,330,2,110,4,4,2,1602576`

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Last modified February 17 19:00 EST 2012. Contains 206076 sequences.