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A191952 Number of simple mixed arrangements of n pseudolines and 2 double pseudolines in the projective plane. 0

%I

%S 1,4,48,1329,80253

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

%H J. Ferté, V. Pilaud and M. Pocchiola, <a href="https://arxiv.org/abs/1009.1575">On the number of simple arrangements of five double pseudolines</a>, arXiv:1009.1575 [cs.CG], 2010; Discrete Comput. Geom. 45 (2011), 279-302.

%K nonn,more

%O 0,2

%A _N. J. A. Sloane_, Jun 20 2011

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Last modified January 24 01:05 EST 2020. Contains 331178 sequences. (Running on oeis4.)