A063805 Number of nonisomorphic oriented matroids with n points in dimensions 2 through n-1.

1, 3, 8, 34, 380, 192448

Offset

3,2

Links

Table of n, a(n) for n=3..8.

Lukas Finschi, Homepage of Oriented Matroids

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

Row sums of A063804.

Sequence in context: A303870 A186517 A094448 * A125046 A270378 A218154

Adjacent sequences: A063802 A063803 A063804 * A063806 A063807 A063808

Keyword

nonn,more

Author

N. J. A. Sloane, Aug 20 2001

Status

approved