I verified level 4 after your update and it does not yet match - although close !

Gah. I See where this is headed. I add another ifelse clause to get level 4 right, and then another for level 5...

This has to be possible recursively! It's amazing how something so complex evolves out of such a simple process. It's also amazing how something with so many symmetries and essentially only one dissymmetry could be so hard to generate.

Part of the problem is the shear size the things grow to so rapidly. I wrote a simple png plotter that produces a png of a 1000x1000 chunk and allows you to 'move' around and zoom in--very slowly. But as the level increases, it becomes impossible to keep track of where you are, so it doesn't help much.