Number of mixed arrangements of n pseudolines and 1 double pseudoline in the Mobius plane.
A191962
Number of mixed arrangements of n pseudolines and 1 double pseudoline in the Mobius plane.
Terms
- a(0) =1a(1) =1a(2) =5a(3) =45a(4) =832a(5) =37461
External references
- oeis: A191962