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Number of abstract order types of configurations of n points in 3 dimensions.
1

%I #14 Feb 22 2023 12:00:33

%S 1,5,55,5083,10775236

%N Number of abstract order types of configurations of n points in 3 dimensions.

%H Lukas Finschi, <a href="https://finschi.com/math/om/">Homepage of Oriented Matroids</a>

%H L. Finschi and K. Fukuda, <a href="http://www.cccg.ca/proceedings/2001/finschi-1053.ps.gz">Complete combinatorial generation of small point set configurations and hyperplane arrangements</a>, pp. 97-100 in Abstracts 13th Canadian Conference on Computational Geometry (CCCG '01), Waterloo, Aug. 13-15, 2001.

%Y A diagonal of A063853.

%K nonn,more

%O 4,2

%A _N. J. A. Sloane_, Aug 26 2001