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A144556 Number of Sylvester-Gallai geometries on n points. 0
0, 0, 0, 0, 0, 0, 1, 0, 1, 1, 1, 3, 7, 1, 119, 398, 161925, 24212890 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,12

REFERENCES

L. M. Pretorius and K. J. Swanepoel, The Sylvester-Gallai theorem, ..., Discr. Math., 309 (2009), 385-399.

LINKS

Table of n, a(n) for n=1..18.

CROSSREFS

Sequence in context: A309376 A247382 A031436 * A001439 A318215 A086313

Adjacent sequences:  A144553 A144554 A144555 * A144557 A144558 A144559

KEYWORD

nonn

AUTHOR

N. J. A. Sloane, Jan 01 2009

STATUS

approved

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Last modified October 21 13:24 EDT 2019. Contains 328299 sequences. (Running on oeis4.)