Number of connected topologies on n labeled points.
A001929
Number of connected topologies on n labeled points.
Terms
- a(0) =1a(1) =1a(2) =3a(3) =19a(4) =233a(5) =4851a(6) =158175a(7) =7724333a(8) =550898367a(9) =56536880923
External references
- oeis: A001929