Adam Majewski http://republika.pl/fraktal/mset_external_ray.html
Mandelbrot set for map: Z(n+1)=Z(n)*Z(n) +C
External rays for angles of the form  : n / ( 2² - 1)
(1/3, 2/3)
landing on the point c= - 3/4,
which is root point of period 2 component
images made with Mandel - program for DOS by Wolf Jung, version 3.5</a>
see : http://www.iram.rwth-aachen.de/~jung/indexp.html archive copy at the Wayback Machine
Probably mathemathically most advanced program for drawing mandel / Fatou / Julia sets

1< enter > ; q = 2  ; e = 0/1 < enter > ; F9 ; < end >
changed to grayscale, resized and converted to jpg using IrfanView
www.irfanview.com/

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