Similar visualizations here: http://blog.morphism.com/2010/05/building-numbers.html http://blog.morphism.com/2010/07/pdfs-from-building-numbers.html That

Similar visualizations here: http://blog.morphism.com/2010/05/building-numbers.html http://blog.morphism.com/2010/07/pdfs-from-building-numbers.html That stuff was generated using Mathematica.