Well, my last version failed to work properly on linux due to v large FP numbers (due to lack of last when the >4 condition is met).

Here's a slightly longer version (136) that is linux-safe (and still avoids a last).

map{$a=1-$_/10;map{$d=$a;$e=$b=$_/20-2;map{($d,$e)=(2*$d*$e+$a,$e**2
-$d**2+$b);$c=$d**2+$e**2>4?$d=8:_}1..50;print$c}0..59;print$/}0..20

[download]
Tom Melly, pm@tomandlu.co.uk

In reply to Re^3: Fractal Golf anyone? by Melly
in thread Fractal Golf anyone? by Melly

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