A030261 - OEIS

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A030261

Number of nonisomorphic commutative groupoids with no idempotents and no symmetry.

1, 0, 1, 35, 13776, 83306272 (list; graph; refs; listen; history; text; internal format)

	OFFSET	`0,4`
	LINKS	`Table of n, a(n) for n=0..5.` `Index entries for sequences related to groupoids`
	CROSSREFS	`Sequence in context: A224126 A212025 A202066 * A007102 A196542 A215570` `Adjacent sequences: A030258 A030259 A030260 * A030262 A030263 A030264`
	KEYWORD	`nonn,more`
	AUTHOR	`Christian G. Bower`
	STATUS	`approved`

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Last modified May 20 21:27 EDT 2013. Contains 225464 sequences.