Number of connected arrangements of n circles in the affine plane, in the sense that the union of the boundaries of the circles is a connected set.

A275924

Number of connected arrangements of n circles in the affine plane, in the sense that the union of the boundaries of the circles is a connected set.

Terms

    a(0) =1a(1) =1a(2) =1a(3) =6a(4) =112a(5) =15502

External references