A296411 Number of non-isomorphic 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, 8, 278, 144395, 436634633

Offset: 0

Author

Manfred Scheucher, Dec 11 2017

Keywords

• nonn
• more

Comments

For more information, see A296406.

Crossrefs

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

Extensions

a(7) corrected by Manfred Scheucher, May 09 2018