A288556 Number of connected one-sided arrangements of n circles in the affine plane, in the sense that the union of the solid circles is a connected set.

1, 1, 2, 11, 183

Offset: 0

Author

N. J. A. Sloane, Jun 13 2017, based on information supplied by Jon Wild

Keywords

• nonn
• more

Comments

These counts are not reduced for mirror symmetry.

See A250001, the main entry for this problem, for further information.

Crossrefs

Cf. A250001, A275923, A275924, A288554-A288568.