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 A111024 #4 Mar 02 2015 16:08:49 %S A111024 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,0,1,1,1,1,1,0,1,1,1,1,1,1,0,1,1,1, %T A111024 1,1,1,1,0,0,1,1,1,1,1,1,1,0,0,1,1,1,1,1,1,1,1,0,0,0,1,1,1,1,1,1,1,1, %U A111024 0,0,0,1,1,1,1,1,1,1,1,1,0,0,0,0,1,1,1,1,1,1,1 %N A111024 Triangle read by rows: T(n,s), 0<=s<n, = 1 if there exist in the Euclidean plane n lines with exactly s points of intersection of these lines on each line, otherwise 0. %D A111024 B. Gruenbaum, 'Points on lines' revisited, Nieuw Tijdschr. Wisk., 68 (1980-81), 209-213. %D A111024 F. Heierman, Punten op lijnen, Nieuw Tijdschr. Wisk., 67 (1979-80) 113-120. %e A111024 1; 1,1; 1,1,1; 1,1,1,1; 1,1,1,1,1; 1,1,0,1,1,1 %K A111024 nonn,tabl %O A111024 1,1 %A A111024 _Floor van Lamoen_, Oct 05 2005