Number of strict closure operators on a set of n elements such that all pairs of nonempty disjoint closed sets can be separated by clopen sets.
A356544
Number of strict closure operators on a set of n elements such that all pairs of nonempty disjoint closed sets can be separated by clopen sets.
Terms
- a(0) =0a(1) =1a(2) =4a(3) =35a(4) =857a(5) =84230a(6) =70711467
External references
- oeis: A356544