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 A103499 #2 Mar 31 2012 10:29:09 %S A103499 4,113,1026,5273,20170,60906,159798,371262,787640,1550813,2882994, %T A103499 5083015,8610474,14032370,22148796,33984174,50936912,74600413, %U A103499 107204886,151236555,209999748,287230504,387791652,516909272,681578384,888990683 %N A103499 (1/12)*number of right triangles that can be formed from the points of an (n+1)X(n+1)X(n+1) lattice cube. %Y A103499 Cf. all triangles in lattice cube A103426; special triangles in lattice cube: A103427, A103428, A103429, A103500, A103501; A103158 tetrahedra in lattice cube. %K A103499 nonn %O A103499 1,1 %A A103499 _Hugo Pfoertner_, Feb 08 2005