id:A058104 - OEIS Search Results

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Number of asymmetric semigroups of order n.

+0
3

1, 1, 3, 15, 112, 1221, 19684, 1458882 (list; graph; listen)

	OFFSET	`0,3`
	LINKS	`Index entries for sequences related to semigroups`
	CROSSREFS	`Cf. A027851, A058113. a(n) = A079175(n, A027423(n)).` `Sequence in context: A130168 A089945 A135083 this_sequence A056053 A059849 A123853` `Adjacent sequences: A058101 A058102 A058103 this_sequence A058105 A058106 A058107`
	KEYWORD	`nonn,hard`
	AUTHOR	`Christian G. Bower (bowerc(AT)usa.net), Nov 09 2000. Updated Feb 19 2001.`

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Last modified August 29 17:54 EDT 2008. Contains 143238 sequences.