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 A103659 #5 Oct 27 2012 14:08:31 %S A103659 1,2,2,4,4,12,12,12,12,12,24,24,24,24 %N A103659 (1/6) * most frequently occurring volume assumed by triangular pyramids with their 4 vertices chosen from distinct points of an (n+1)X(n+1)X(n+1) lattice cube. %e A103659 a(1)=1 because 2*A103660(1)=56 of the 2*A103656(1)=58 triangular pyramids that can be formed from the vertices of a cube have volume=1/6. The other two pyramids have volume=1/3. %Y A103659 Cf. A103660 = number of occurrences of the most frequent volume. For more cross-references see A103657. %K A103659 more,nonn %O A103659 1,2 %A A103659 _Hugo Pfoertner_, Feb 19 2005