id:A028851 - OEIS Search Results

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

+0
1

0, 0, 3, 0, 12, 0, 40, 21, 188, 0 (list; graph; listen)

	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`
	CROSSREFS	`Sequence in context: A071983 A094897 A019264 this_sequence A132221 A140093 A055314` `Adjacent sequences: A028848 A028849 A028850 this_sequence A028852 A028853 A028854`
	KEYWORD	`nonn`
	AUTHOR	`Richard M Kreminski (kremin(AT)boisdarc.tamu-commerce.edu)`

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Last modified July 25 02:12 EDT 2008. Contains 142294 sequences.