login

Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.

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

%I #10 Oct 07 2019 11:16:35

%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