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A063801
Number of nonisomorphic oriented matroids with n points in 3 dimensions.
0
1, 3, 12, 206, 181472
OFFSET
4,2
REFERENCES
Fukuda, Komei; Miyata, Hiroyuki; Moriyama, Sonoko. Complete Enumeration of Small Realizable Oriented Matroids. Discrete Comput. Geom. 49 (2013), no. 2, 359--381. MR3017917. - From N. J. A. Sloane, Feb 16 2013
LINKS
L. Finschi and K. Fukuda, Complete combinatorial generation of small point set configurations and hyperplane arrangements, pp. 97-100 in Abstracts 13th Canadian Conference on Computational Geometry (CCCG '01), Waterloo, Aug. 13-15, 2001.
CROSSREFS
A diagonal of A063804.
Sequence in context: A120606 A089428 A211892 * A366504 A160320 A321603
KEYWORD
nonn,more
AUTHOR
N. J. A. Sloane, Aug 20 2001
STATUS
approved