A018813 - OEIS

%I #13 Nov 27 2017 03:18:47

%S 0,0,0,0,0,0,14,4,4,4,4,28,60,44,20,20,88,172,272,228,168,180,284,404,

%T 540,484,628,788,964,1276,1620,1612,1588,1548,1492,1420,2072,2484,

%U 2928,3404,3912,4788,5728,5852,5960,6052,6692,7364,8068,8004,8520,9468,10464

%N Number of lines through exactly 6 points of an n X n grid of points.

%H Seiichi Manyama, <a href="/A018813/b018813.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 0,7

%A _David W. Wilson_