Hey, when i went to run it, i got an error. There is a  } missing right after:

 
($xaz=1;$xaz<=$azx;++$xaz){$zax=$axz+$zxa;push@zax,$zax;$axz=$z
   +ax;$zxa=$zax
[download]

I hope this helps

Dipul
Update: Seems like you fixed that problem :)