How about e: 
use integer;$|++;my@e=(1)x5e3;for(a..zzz){$e[$_-1]+=$e[$_]/$_,$e[$_]%=
+$_
for reverse 1..$#e;print$e[0];$e[0]=0;$_*=10for@e;}

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In reply to Re: Golf -- compute PI by I0
in thread Golf -- compute PI by Ovid

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