%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. FertÃ©, 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), 279302.
%K nonn,more
%O 0,2
%A _N. J. A. Sloane_, Jun 20 2011
