A018817 Number of lines through exactly 10 points of an n X n grid of points.

0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 22, 4, 4, 4, 4, 4, 4, 4, 4, 44, 92, 60, 20, 20, 20, 20, 20, 20, 136, 268, 416, 324, 216, 92, 92, 92, 92, 244, 412, 596, 796, 676, 540, 388, 220, 220, 596, 1004, 1444, 1916, 2420, 2124, 1796, 1436, 1044, 844, 1084, 1340, 1612, 1900, 2204

Offset

0,11

Links

Seiichi Manyama, Table of n, a(n) for n = 0..1000

S. Mustonen, On lines and their intersection points in a rectangular grid of points

Crossrefs

Sequence in context: A317322 A040470 A040471 * A040472 A139335 A304456

Adjacent sequences: A018814 A018815 A018816 * A018818 A018819 A018820

Keyword

nonn

Author

David W. Wilson

Status

approved