id:A058135 - OEIS Search Results

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Number of asymmetric self-converse monoids (semigroups with identity) of order n.

+0
4

1, 2, 4, 13, 54, 322, 2545 (list; graph; listen)

	OFFSET	`1,2`
	LINKS	`Index entries for sequences related to monoids`
	CROSSREFS	`a(n)=A058136(n)*2-A058130(n).` `Sequence in context: A030939 A030886 A030810 this_sequence A030968 A030862 A030923` `Adjacent sequences: A058132 A058133 A058134 this_sequence A058136 A058137 A058138`
	KEYWORD	`nonn,more`
	AUTHOR	`Christian G. Bower (bowerc(AT)usa.net), Nov 13 2000`

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Last modified November 22 20:51 EST 2009. Contains 167312 sequences.