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A063856 Number of abstract order types of configurations of n points in 4 dimensions. 1
1, 8, 204, 505336 (list; graph; refs; listen; history; text; internal format)
OFFSET

5,2

LINKS

Table of n, a(n) for n=5..8.

L. 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

A diagonal of A063853.

Sequence in context: A241224 A259065 A204247 * A090962 A330287 A279663

Adjacent sequences:  A063853 A063854 A063855 * A063857 A063858 A063859

KEYWORD

nonn

AUTHOR

N. J. A. Sloane, Aug 26 2001

STATUS

approved

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Last modified February 22 08:23 EST 2020. Contains 332118 sequences. (Running on oeis4.)