A058106 - OEIS

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A058106

Number of self-converse asymmetric semigroups of order n.

1, 1, 3, 9, 44, 271, 2246, 33672 (list; graph; refs; listen; history; text; internal format)

	OFFSET	`0,3`
	LINKS	`Table of n, a(n) for n=0..7.` `Index entries for sequences related to semigroups`
	CROSSREFS	`Cf. A029851.` `Sequence in context: A108239 A218921 A028858 * A021103 A222662 A209977` `Adjacent sequences: A058103 A058104 A058105 * A058107 A058108 A058109`
	KEYWORD	`nonn,hard`
	AUTHOR	`Christian G. Bower, Nov 09 2000`
	EXTENSIONS	`Updated Feb 19 2001`
	STATUS	`approved`

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Last modified May 18 18:50 EDT 2013. Contains 225423 sequences.