i saw this before
worked it out but took a long time
(
dex,
Tue 4 Mar 2003, 17:09,
archived)
well it didn't take me long.
i figured that the silly sum had to be the key, so i just put consecutive numbers into the formula, and noticed the pattern.
(
Lumpbucket tekcubpmuL,
Tue 4 Mar 2003, 17:10,
archived)