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A028853
Number of prime labeled topologies on n points.
0
4, 29, 320, 6942, 205760, 9535241
OFFSET
2,1
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: A195194 A215955 A295237 * A118795 A325478 A099700
KEYWORD
nonn,more
AUTHOR
Richard M Kreminski (kremin(AT)boisdarc.tamu-commerce.edu)
STATUS
approved