A296412 Number of non-isomorphic digon-free cylindrical arrangements of n pairwise intersecting pseudo-circles on a sphere, in the sense that two cells of the arrangement are separated by each of the pseudo-circles, reduced for mirror symmetry.

1, 1, 1, 1, 2, 14, 2131, 3012906

Offset

0,5

Comments

For more information, see A296406.

Links

Table of n, a(n) for n=0..7.

Crossrefs

Cf. A250001, A275923, A275924, A288554-A288568, A296406, A296407-A296412, A006248.

Sequence in context: A156736 A334247 A277288 * A296410 A006266 A284378

Adjacent sequences: A296409 A296410 A296411 * A296413 A296414 A296415

Keyword

nonn,more

Author

Manfred Scheucher, Dec 11 2017

Status

approved