> > Did you know that you need only 36 bytes of Ruby code to
> > build the next row, based on the previous row? Really!
>
> I've got 32 bytes here :-)

That was an easy one: map is 4 characters shorter than collect.

But I was able to strip one more byte... It's now 31 bytes.

Sorry...

gegroet,
Erik V. - http://www.erikveen.dds.nl/

PS: Hint: << instead of +