A028849 - OEIS

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A028849

Number of composite unlabeled topologies (i.e. composite homeomorphism classes) on n points.

0, 0, 6, 0, 27, 0, 91, 45, 417, 0 (list; graph; refs; listen; history; internal format)

	OFFSET	`2,3`
	REFERENCES	`R. Kreminski, "Graphs and matrices in the study of (finite) topological spaces", Missouri J. Mathematical Sciences, Volume 12 (Issue #2, Spring 2000).`
	LINKS	`Missouri J. Mathematical Sciences (New web address)`
	CROSSREFS	`Sequence in context: A167357 A064381 A062254 * A138704 A005396 A056462` `Adjacent sequences: A028846 A028847 A028848 * A028850 A028851 A028852`
	KEYWORD	`nonn`
	AUTHOR	`Richard M Kreminski (kremin(AT)boisdarc.tamu-commerce.edu)`

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Last modified February 17 09:17 EST 2012. Contains 206009 sequences.