Number of simple mixed arrangements of 1 pseudoline and n double pseudolines in the Mobius plane.
A191957
Number of simple mixed arrangements of 1 pseudoline and n double pseudolines in the Mobius plane.
Terms
- a(0) =1a(1) =1a(2) =7a(3) =1499a(4) =9186477
External references
- oeis: A191957