Number of distinct topologies on an n-set that have exactly 11 open sets.
A281779
Number of distinct topologies on an n-set that have exactly 11 open sets.
Terms
- a(0) =0a(1) =0a(2) =0a(3) =0a(4) =0a(5) =500a(6) =16980a(7) =342160a(8) =5486040a(9) =77926380a(10) =1031160060a(11) =13047426920a(12) =160124426880
External references
- oeis: A281779