Number of non-isomorphic arrangements of n lines in the real projective plane such that the lines do not all pass through a common point.
A048872
Number of non-isomorphic arrangements of n lines in the real projective plane such that the lines do not all pass through a common point.
Terms
- a(0) =1a(1) =2a(2) =4a(3) =17a(4) =143a(5) =4890a(6) =460779
External references
- oeis: A048872