A058112 - OEIS

This site is supported by donations to The OEIS Foundation.

A058112

Idempotent semigroups of order n.

1, 1, 3, 10, 46, 251, 1682, 13213 (list; graph; refs; listen; history; internal format)

	OFFSET	`0,3`
	LINKS	`Index entries for sequences related to monoids` `Index entries for sequences related to semigroups`
	CROSSREFS	`Main diagonal of A058108.` `Sequence in context: A121138 A074508 A143500 * A020008 A167999 A000849` `Adjacent sequences: A058109 A058110 A058111 * A058113 A058114 A058115`
	KEYWORD	`nonn,hard`
	AUTHOR	`Christian G. Bower (bowerc(AT)usa.net), Nov 09 2000`
	EXTENSIONS	`Updated Feb 19 2001`

Content is available under The OEIS End-User License Agreement .

Last modified February 17 08:44 EST 2012. Contains 205998 sequences.