A030250 - OEIS

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A030250

Number of nonisomorphic groupoids with no idempotents.

1, 0, 3, 978, 56630832, 813802235250650, 4797611106478930201025520, 17327898558894838031017212608777367670, 53493753018329066207577438898229132113128344235601408 (list; graph; refs; listen; history; text; internal format)

	OFFSET	`0,3`
	LINKS	`Table of n, a(n) for n=0..8.` `Index entries for sequences related to groupoids`
	CROSSREFS	`Cf. A001329, A038018.` `Sequence in context: A167058 A167067 A151585 * A145231 A167069 A024046` `Adjacent sequences: A030247 A030248 A030249 * A030251 A030252 A030253`
	KEYWORD	`nonn`
	AUTHOR	`Christian G. Bower, Feb 15, 1998 and May 15, 1998`
	STATUS	`approved`

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Last modified May 23 10:15 EDT 2013. Contains 225587 sequences.