A058115 - OEIS

A058115

Number of asymmetric idempotent semigroups of order n.

1, 1, 1, 3, 12, 68, 502, 4158 (list; graph; refs; listen; history; text; internal format)

	OFFSET	`0,4`
	LINKS	`Table of n, a(n) for n=0..7.` `Index entries for sequences related to semigroups`
	CROSSREFS	`Main diagonal of A058113.` `Sequence in context: A039750 A296979 A004127 * A101313 A257605 A265886` `Adjacent sequences: A058112 A058113 A058114 * A058116 A058117 A058118`
	KEYWORD	`nonn,hard`
	AUTHOR	`Christian G. Bower, Nov 09 2000`
	EXTENSIONS	`Updated Feb 19 2001`
	STATUS	`approved`

Last modified July 5 13:39 EDT 2022. Contains 355099 sequences. (Running on oeis4.)