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 A222268 #15 Feb 29 2016 01:01:09 %S A222268 15,649,13307,107201,719981,2912939 %N A222268 Number of points defined by the lines described in A222267. %C A222268 Given a cubic n X n X n grid of points, a collection of lines is produced by constructing a line through every pair of points. A222267 gives the count of such lines. a(n) is the total number of points of intersection of these lines, including the original n^3 points. %e A222268 A 2 X 2 X 2 grid of points defines 28 distinct lines which intersect in a total of 15 points (including the original 8 points). %Y A222268 A222267 is the number of lines produced from the grid of points. %K A222268 nonn,more %O A222268 2,1 %A A222268 _Clive Tooth_, Feb 13 2013 %E A222268 a(6) and a(7) from _Clive Tooth_, Feb 28 2016