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A063855 Number of abstract order types of configurations of n points in 3 dimensions. 1
1, 5, 55, 5083, 10775236 (list; graph; refs; listen; history; text; internal format)
OFFSET

4,2

LINKS

Table of n, a(n) for n=4..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: A275546 A068666 A082780 * A081785 A144996 A129440

Adjacent sequences:  A063852 A063853 A063854 * A063856 A063857 A063858

KEYWORD

nonn

AUTHOR

N. J. A. Sloane, Aug 26 2001

STATUS

approved

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Last modified February 26 00:08 EST 2020. Contains 332270 sequences. (Running on oeis4.)