login
A288555
Number of one-sided arrangements of n circles in the affine plane.
0
1, 1, 3, 14, 200
OFFSET
0,3
COMMENTS
These counts are not reduced for mirror symmetry.
See A250001, the main entry for this problem, for further information.
CROSSREFS
KEYWORD
nonn,more
AUTHOR
N. J. A. Sloane, Jun 13 2017, based on information supplied by Jon Wild on Aug 31 2016.
STATUS
approved