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A028847 Number of composite labeled topologies on n points. 0
0, 0, 35, 0, 3767, 0 (list; graph; refs; listen; history; text; 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

Table of n, a(n) for n=2..7.

Missouri J. Mathematical Sciences (New web address)

CROSSREFS

Sequence in context: A174593 A104785 A225313 * A176199 A059023 A327004

Adjacent sequences:  A028844 A028845 A028846 * A028848 A028849 A028850

KEYWORD

nonn

AUTHOR

Richard M Kreminski (kremin(AT)boisdarc.tamu-commerce.edu)

STATUS

approved

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Last modified April 14 03:53 EDT 2021. Contains 342941 sequences. (Running on oeis4.)