A191949 Number of simple acyclic Mobius chirotopes on n marked double pseudolines.

1, 1, 1, 118, 541820

Offset

0,4

Links

Table of n, a(n) for n=0..4.

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: A007965 A140893 A143776 * A013683 A071843 A234691

Adjacent sequences: A191946 A191947 A191948 * A191950 A191951 A191952

Keyword

nonn,more

Author

N. J. A. Sloane, Jun 20 2011

Status

approved