A191946 - OEIS

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A191946

Number of simple acyclically oriented Mobius arrangements of pseudolines of order n.

1, 1, 1, 22, 22620

(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: A028692 A127486 A232847 * A221639 A078398 A280812

Adjacent sequences: A191943 A191944 A191945 * A191947 A191948 A191949

KEYWORD

nonn,more

AUTHOR

N. J. A. Sloane, Jun 20 2011

STATUS

approved