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A244025 Analog of A244020, but starting with 5 points, and with the constraint that new points (or lines) are formed only from the intersections of lines (or points) of the same generation. 0
5, 10, 15, 75, 2080 (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: A196157 A048703 A020332 * A044830 A033002 A244021

Adjacent sequences:  A244022 A244023 A244024 * A244026 A244027 A244028

KEYWORD

nonn,more

AUTHOR

N. J. A. Sloane, Jun 20 2014

STATUS

approved

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Last modified July 24 03:24 EDT 2019. Contains 325290 sequences. (Running on oeis4.)