This is another Racket post; one a little bit short, just because this was one of my playing around code that I found interesting. In fact I was trying to learn how to do a Fractal with Racket but my limited knowledge about that and about the language throw me to a different experiment. Bellow the code for it:

This should be very self explanatory. What I like about this code is the concise that is about showing the intent of the code. Racket keeps surprising me ;-)