A030256 - OEIS

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A030256

Number of nonisomorphic commutative groupoids with a nontrivial symmetry.

0, 0, 0, 13, 540, 232767 (list; graph; refs; listen; history; internal format)

	OFFSET	`0,4`
	LINKS	`Index entries for sequences related to groupoids`
	CROSSREFS	`A001425 - A030255.` `Sequence in context: A095883 A139168 A174564 * A023332 A143601 A203360` `Adjacent sequences: A030253 A030254 A030255 * A030257 A030258 A030259`
	KEYWORD	`nonn,more`
	AUTHOR	`Christian G. Bower (bowerc(AT)usa.net)`

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Last modified February 16 21:49 EST 2012. Contains 205978 sequences.