id:A028852 - OEIS Search Results

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

+0
1

0, 0, 1, 0, 3, 0, 10, 6, 44, 0 (list; graph; listen)

	OFFSET	`2,5`
	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: A161678 A081658 A119957 this_sequence A095200 A090460 A071983` `Adjacent sequences: A028849 A028850 A028851 this_sequence A028853 A028854 A028855`
	KEYWORD	`nonn`
	AUTHOR	`Richard M Kreminski (kremin(AT)boisdarc.tamu-commerce.edu)`

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Last modified December 9 18:50 EST 2009. Contains 170568 sequences.