A028847 Number of composite labeled topologies on n points.

0, 0, 35, 0, 3767, 0

Offset

2,3

Links

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

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: A174593 A104785 A225313 * A365895 A176199 A059023

Adjacent sequences: A028844 A028845 A028846 * A028848 A028849 A028850

Keyword

nonn,more

Author

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

Status

approved