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Number of lines through exactly 8 points of an n X n grid of points.
1

%I #13 Nov 27 2017 03:20:09

%S 0,0,0,0,0,0,0,0,18,4,4,4,4,4,4,36,76,52,20,20,20,20,112,220,344,276,

%T 192,92,92,212,348,500,668,580,476,356,516,844,1204,1596,2020,1804,

%U 1556,1452,1332,1196,1420,1660,1916,1788,2256,2756,3288,3852,4448,5300,6200,6220

%N Number of lines through exactly 8 points of an n X n grid of points.

%H Seiichi Manyama, <a href="/A018815/b018815.txt">Table of n, a(n) for n = 0..1000</a>

%H S. Mustonen, <a href="http://www.survo.fi/papers/PointsInGrid.pdf">On lines and their intersection points in a rectangular grid of points</a>

%K nonn

%O 0,9

%A _David W. Wilson_