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A244023 Analog of A244020, but starting with 6 points instead of 4. 0
6, 15, 45, 855, 342000 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..5.

Shalosh B. Ekhad, Doron Zeilberger, Enumerative Geometrical Genealogy (Or: The Sex Life of Points and Lines), arXiv:1406.5157 [math.CO], (19-June-2014)

CROSSREFS

Related sequences: A140468, A244020-A244026.

Sequence in context: A095122 A215917 A082637 * A271131 A271154 A271166

Adjacent sequences:  A244020 A244021 A244022 * A244024 A244025 A244026

KEYWORD

nonn,more

AUTHOR

N. J. A. Sloane, Jun 20 2014

STATUS

approved

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Last modified February 17 21:46 EST 2020. Contains 332006 sequences. (Running on oeis4.)