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 A119877 #2 Mar 31 2012 10:29:10 %S A119877 12,12,36,36,84,48,36,36,96,108,72,72,60,156,120,120,84,72,144,144, %T A119877 228,228,120,120,120,156,144,144,216,120,252,252,144,264,168,168,204, %U A119877 192,288,288,240,192,276,276,312,288,168,168,192,252,360,360,336,288,192 %N A119877 Number of edges of the root-n Waterman polyhedron of void-center type as defined in A119870. %C A119877 For more information see A119870. %Y A119877 Cf. A119869, A119874, A119872 [edges of Waterman polyhedron of basic type]. %K A119877 nonn %O A119877 0,1 %A A119877 _Hugo Pfoertner_, Jun 05 2006