id:A028856 - OEIS Search Results

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Number of prime unlabeled T_0 topologies (i.e. prime T_0 homeomorphism classes) on n points.

+0
1

2, 5, 13, 63, 308, 2045, 16969, 183216, 2567158, 46749427 (list; graph; listen)

	OFFSET	`2,1`
	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`
	CROSSREFS	`Sequence in context: A105905 A075738 A076999 this_sequence A013497 A128029 A081650` `Adjacent sequences: A028853 A028854 A028855 this_sequence A028857 A028858 A028859`
	KEYWORD	`nonn,nice`
	AUTHOR	`Richard M Kreminski (kremin(AT)boisdarc.tamu-commerce.edu)`

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Last modified July 19 08:04 EDT 2008. Contains 142098 sequences.