# Greetings from The On-Line Encyclopedia of Integer Sequences! http://oeis.org/ Search: id:a191944 Showing 1-1 of 1 %I A191944 #11 Oct 07 2019 11:12:34 %S A191944 1,1,1,1086,58266120 %N A191944 Number of chirotopes on n marked double pseudolines. %H A191944 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. %K A191944 nonn,more %O A191944 0,4 %A A191944 _N. J. A. Sloane_, Jun 20 2011 # Content is available under The OEIS End-User License Agreement: http://oeis.org/LICENSE