id:A066305 - OEIS Search Results

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Number of connected reduced partially ordered sets (posets) with n unlabeled elements.

+0
2

1, 0, 2, 5, 22, 117 (list; graph; listen)

	OFFSET	`1,3`
	LINKS	`N. J. A. Sloane, Transforms` `Index entries for sequences related to posets`
	CROSSREFS	`Cf. A000608. Inverse Euler transform of A066304.` `Sequence in context: A115602 A115601 A015557 this_sequence A020093 A111542 A001437` `Adjacent sequences: A066302 A066303 A066304 this_sequence A066306 A066307 A066308`
	KEYWORD	`nonn,more`
	AUTHOR	`Christian G. Bower (bowerc(AT)usa.net), Dec 12 2001`

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Last modified July 25 07:41 EDT 2008. Contains 142293 sequences.