A191952 - OEIS

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A191952

Number of simple mixed arrangements of n pseudolines and 2 double pseudolines in the projective plane.

1, 4, 48, 1329, 80253 (list; graph; refs; listen; history; text; internal format)

	OFFSET	`0,2`
	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: A211049 A321076 A166231 * A013145 A013150 A353922` `Adjacent sequences: A191949 A191950 A191951 * A191953 A191954 A191955`
	KEYWORD	`nonn,more`
	AUTHOR	`N. J. A. Sloane, Jun 20 2011`
	STATUS	`approved`

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Last modified June 1 04:03 EDT 2024. Contains 373010 sequences. (Running on oeis4.)