A028848 - OEIS

%I #8 Jun 17 2024 07:08:21

%S 0,0,25,0,2641,0

%N Number of composite labeled T_0 topologies on n points.

%H R. Kreminski, <a href="https://doi.org/10.35834/2000/1202096">Graphs and matrices in the study of (finite) topological spaces</a>, Missouri J. Mathematical Sciences, Volume 12 (Issue #2, Spring 2000).

%K nonn,more

%O 2,3

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