Number of connected arrangements of n pseudo-circles in the affine plane, in the sense that the union of the solid pseudo-circles is a connected set.
A288560
Number of connected arrangements of n pseudo-circles in the affine plane, in the sense that the union of the solid pseudo-circles is a connected set.
Terms
- a(0) =1a(1) =1a(2) =2a(3) =11a(4) =156a(5) =16782
External references
- oeis: A288560