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A063855
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Number of abstract order types of configurations of n points in 3 dimensions.
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1
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OFFSET
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4,2
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LINKS
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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.
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CROSSREFS
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A diagonal of A063853.
Sequence in context: A275546 A068666 A082780 * A081785 A144996 A129440
Adjacent sequences: A063852 A063853 A063854 * A063856 A063857 A063858
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KEYWORD
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nonn,more
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AUTHOR
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N. J. A. Sloane, Aug 26 2001
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STATUS
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approved
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