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A191953 Number of simple mixed arrangements of 1 pseudoline and n double pseudolines in the projective plane. 0
1, 1, 4, 626, 4822394 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,3

LINKS

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

J. Ferte, 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: A232620 A219892 A079103 * A169619 A091288 A067171

Adjacent sequences:  A191950 A191951 A191952 * A191954 A191955 A191956

KEYWORD

nonn,more

AUTHOR

N. J. A. Sloane, Jun 20 2011

STATUS

approved

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Last modified December 5 10:45 EST 2019. Contains 329751 sequences. (Running on oeis4.)