A288555 Number of one-sided arrangements of n circles in the affine plane.

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.

Links

Table of n, a(n) for n=0..4.

Crossrefs

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

Sequence in context: A058388 A362385 A327230 * A288563 A081383 A351139

Adjacent sequences: A288552 A288553 A288554 * A288556 A288557 A288558

Keyword

nonn,more

Author

N. J. A. Sloane, Jun 13 2017, based on information supplied by Jon Wild on Aug 31 2016.

Status

approved