This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A018817 #14 Nov 27 2017 03:19:47 %S A018817 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, %T A018817 136,268,416,324,216,92,92,92,92,244,412,596,796,676,540,388,220,220, %U A018817 596,1004,1444,1916,2420,2124,1796,1436,1044,844,1084,1340,1612,1900,2204 %N A018817 Number of lines through exactly 10 points of an n X n grid of points. %H A018817 Seiichi Manyama, <a href="/A018817/b018817.txt">Table of n, a(n) for n = 0..1000</a> %H A018817 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 A018817 nonn %O A018817 0,11 %A A018817 _David W. Wilson_