A244023 Analog of A244020, but starting with 6 points instead of 4.

6, 15, 45, 855, 342000

Offset: 1

Author

N. J. A. Sloane, Jun 20 2014

Keywords

• nonn
• more

Links

• 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.