On the Cardinality of the 𝑇₀-Topologies on a Finite Set

Table 7

𝑘	𝑡𝑛0(𝑛,𝑘)
2^𝑛−2	9
2^𝑛−2+1	4
2^𝑛−2+2^𝑛−𝑗, 6≤𝑗≤𝑛−1	6
2^𝑛−2+2^𝑛−5	8
2^𝑛−2+2^𝑛−4	6
2^𝑛−2+2^𝑛−3	3
2^𝑛−1	1