A191954 - OEIS

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A191954

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

1, 2, 48, 86715 (list; graph; refs; listen; history; text; internal format)

	OFFSET	`0,2`
	LINKS	`Table of n, a(n) for n=0..3.` `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: A137592 A203778 A203305 * A212170 A057527 A166475` `Adjacent sequences: A191951 A191952 A191953 * A191955 A191956 A191957`
	KEYWORD	`nonn,more`
	AUTHOR	`N. J. A. Sloane, Jun 20 2011`
	STATUS	`approved`

Last modified April 12 10:52 EDT 2021. Contains 342920 sequences. (Running on oeis4.)