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A191941 Number of simple one-marked arrangements of pseudolines of order n. 0
0, 1, 1, 67, 355153 (list; graph; refs; listen; history; text; internal format)
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: A211962 A263463 A279798 * A087536 A281888 A282338

Adjacent sequences: A191938 A191939 A191940 * A191942 A191943 A191944

KEYWORD

nonn,more

AUTHOR

N. J. A. Sloane, Jun 20 2011

STATUS

approved

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Last modified March 30 07:38 EDT 2023. Contains 361606 sequences. (Running on oeis4.)