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A031436
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Number of proper linear spaces of order n.
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4
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1, 1, 0, 0, 0, 0, 0, 1, 0, 1, 1, 1, 3, 7, 1, 119, 398, 161925, 2412890
(list;
graph;
refs;
listen;
history;
text;
internal format)
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OFFSET
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0,13
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LINKS
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Anton Betten and Dieter Betten, Data up to 18 points, Proceedings of ALCOMA 1999, Springer Verlag 2000, 40-54 [free access].
Hans-Dietrich O. F. Gronau, Ronald C. Mullin, Christian Pietsch, Pairwise Balanced Designs as Linear Spaces, pp. 228-235, table 4.19 [but beware errors], in: Charles J. Colbourn, Ed., CRC Handbook of Combinatorial Designs, CRC Press, Boca Raton 1996 [PDF preview]
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CROSSREFS
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KEYWORD
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nonn,nice,hard,more
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AUTHOR
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Anton Betten (Anton.Betten(AT)uni-bayreuth.de)
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EXTENSIONS
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STATUS
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approved
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