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A028851
Number of composite unlabeled connected topologies (i.e., composite connected homeomorphism classes) on n points.
0
0, 0, 3, 0, 12, 0, 40, 21, 188, 0
OFFSET
2,3
LINKS
R. Kreminski, Graphs and matrices in the study of (finite) topological spaces, Missouri J. Mathematical Sciences, Volume 12 (Issue #2, Spring 2000).
CROSSREFS
Sequence in context: A211802 A249775 A019264 * A132221 A140093 A194093
KEYWORD
nonn,more
AUTHOR
Richard M Kreminski (kremin(AT)boisdarc.tamu-commerce.edu)
STATUS
approved