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A028848
Number of composite labeled T_0 topologies on n points.
0
0, 0, 25, 0, 2641, 0
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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:
A059062
A179809
A110416
*
A172298
A040630
A040631
Adjacent sequences:
A028845
A028846
A028847
*
A028849
A028850
A028851
KEYWORD
nonn
AUTHOR
Richard M Kreminski (kremin(AT)boisdarc.tamu-commerce.edu)
STATUS
approved
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Last modified April 23 20:33 EDT 2024. Contains 371916 sequences. (Running on oeis4.)