A030259 - OEIS

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A030259

Number of nonisomorphic commutative idempotent groupoids with a nontrivial symmetry.

0, 0, 0, 4, 38, 1894 (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	`A030257 - A030258.` `Sequence in context: A093377 A178017 A131591 * A218710 A018860 A016484` `Adjacent sequences: A030256 A030257 A030258 * A030260 A030261 A030262`
	KEYWORD	`nonn,more`
	AUTHOR	`Christian G. Bower`
	STATUS	`approved`

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Last modified May 21 22:50 EDT 2013. Contains 225505 sequences.