A191942 Number of one-marked arrangements of pseudolines of order n.

0, 1, 1, 398

Offset

0,4

Links

Table of n, a(n) for n=0..3.

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: A298124 A327592 A340419 * A158316 A236713 A235958

Adjacent sequences: A191939 A191940 A191941 * A191943 A191944 A191945

Keyword

nonn,more

Author

N. J. A. Sloane, Jun 20 2011

Status

approved