Esoteric ruby Mandelbrot

Inspired from this article i've decided to
play with code in order to create my version of Madelbrot set program in ruby.
This is the code:

( not true, the code is here because the blogger editor didn't work fine when a code contain <
or > )


The code is intentionally obscure.

Is possible to decide: position, zoom factor, number of iterations, and number of lines.
The output should be like this:

Code reduction ( obfuscation in ruby code )

This ruby code is equivalent to the code in previous post

N = 13; k = N-1; r = (1..k).to_a ; e = [r.first, r.last];
r.each{a print(r.map{b e.include?(b*a%N)?"1 ":" "},"\n")}