A030271 - OEIS

A030271

Number of nonisomorphic groupoids with 1 idempotent and no symmetry.

1, 4, 1431, 75491208 (list; graph; refs; listen; history; text; internal format)

	OFFSET	`1,2`
	LINKS	`Table of n, a(n) for n=1..4.` `Index entries for sequences related to groupoids`
	CROSSREFS	`Sequence in context: A278844 A036107 A201390 * A301576 A160088 A094546` `Adjacent sequences: A030268 A030269 A030270 * A030272 A030273 A030274`
	KEYWORD	`nonn,more`
	AUTHOR	`Christian G. Bower`
	STATUS	`approved`

Last modified August 18 02:34 EDT 2022. Contains 356204 sequences. (Running on oeis4.)