On Wed, 2006-05-17 at 16:58 -0700, Paul Charles Leddy wrote:
> http://portland.craigslist.org/sad/161174289.html
> 
> anyone know how to solve such sequences? just looked around and am
> curious. not at all interested in not qualifying for this job

It's a classic, but I'm not quite sure that it is completely right.  The
trick is to repeat the lines outloud.  Just google for that set of
numbers.  However, I don't get the 11->121 transition, so I could be
completely wrong. 

1      one one -> 11
11     two ones -> 21
121    one one one two one one -> 111211
111211 three ones one two two ones -> 311221
311221 one three two ones two twos one one -> 13212211

-- Dave

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