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A191949 Number of simple acyclic Mobius chirotopes on n marked double pseudolines. 0
1, 1, 1, 118, 541820 (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: A007965 A140893 A143776 * A013683 A071843 A234691

Adjacent sequences:  A191946 A191947 A191948 * A191950 A191951 A191952

KEYWORD

nonn,more

AUTHOR

N. J. A. Sloane, Jun 20 2011

STATUS

approved

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Last modified January 27 17:58 EST 2020. Contains 331296 sequences. (Running on oeis4.)