A063852 Number of nonisomorphic nondegenerate oriented matroids with n points in dimensions 2 through n-1.

1, 2, 3, 7, 25, 2901

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 A063851.

Sequence in context: A301317 A325125 A091230 * A301519 A274692 A342155

Adjacent sequences: A063849 A063850 A063851 * A063853 A063854 A063855

Keyword

nonn,more

Author

N. J. A. Sloane, Aug 26 2001

Status

approved