Number of distinct topologies on an n-set that have exactly 8 open sets.
A281776
Number of distinct topologies on an n-set that have exactly 8 open sets.
Terms
- a(0) =0a(1) =0a(2) =0a(3) =1a(4) =54a(5) =955a(6) =11760a(7) =122941a(8) =1175034a(9) =10595215a(10) =91506420a(11) =763624081a(12) =6194818014a(13) =49084747075a(14) =381338401080
External references
- oeis: A281776