A191962 Number of mixed arrangements of n pseudolines and 1 double pseudoline in the Mobius plane.

1, 1, 5, 45, 832, 37461

Offset

0,3

Links

Table of n, a(n) for n=0..5.

J. Ferté, V. Pilaud and M. Pocchiola, On the number of simple arrangements of five double pseudolines, arXiv:1009.1575 [cs.CG], 2010; Discrete Comput. Geom. 45 (2011), 279-302.

Crossrefs

Sequence in context: A290941 A211051 A322661 * A326650 A323572 A368491

Adjacent sequences: A191959 A191960 A191961 * A191963 A191964 A191965

Keyword

nonn,more

Author

N. J. A. Sloane, Jun 20 2011

Status

approved