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A144557 Number of Motzkin-Rabin geometries on n points. 0
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 2, 6, 18, 82, 1000 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,14

LINKS

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

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

CROSSREFS

Sequence in context: A141580 A007869 A263915 * A327729 A273001 A118455

Adjacent sequences:  A144554 A144555 A144556 * A144558 A144559 A144560

KEYWORD

nonn,more

AUTHOR

N. J. A. Sloane, Jan 01 2009

STATUS

approved

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Last modified October 4 11:10 EDT 2022. Contains 357239 sequences. (Running on oeis4.)