A191941 Number of simple one-marked arrangements of pseudolines of order n.

0, 1, 1, 67, 355153

Offset

0,4

Links

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

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: A367903 A279798 A379371 * A087536 A281888 A282338

Adjacent sequences: A191938 A191939 A191940 * A191942 A191943 A191944

Keyword

nonn,more

Author

N. J. A. Sloane, Jun 20 2011

Status

approved