A063853 Triangle T(n,k) (n >= 3, k = 1..n-2) read by rows giving number of abstract order types of configurations of n points in n-k dimensions.

1, 1, 3, 1, 5, 11, 1, 8, 55, 93, 1, 11, 204, 5083, 2121, 1, 15, 705, 505336, 10775236, 122508, 1, 19, 2293

Offset: 3

Author

N. J. A. Sloane, Aug 26 2001

Keywords

• nonn
• tabl
• nice
• more

Examples

			Triangle begins:
  1;
  1,3;
  1,5,11;
  1,8,55,93;
  ...
		

Links

• Lukas Finschi, Homepage of Oriented Matroids
• Lukas Finschi, A Graph Theoretical Approach for Reconstruction and Generation of Oriented Matroids, A dissertation submitted to the Swiss Federal Institute of Technology, Zurich for the degree of Doctor of Mathematics, 2001.
• Lukas 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

Diagonals give A063854, A063855, A063856, A246990, A246991. Row sums give A063857.