30 Jun 2011

Open Problem

This post is just a story which is not mine.

When I met R.B.M at "his place", he gave me a sequence of number
1 11 21 1211 111221 ... 
and asked me what is the next number?
I spent 6 months to get the answer with help from some friends.
How long will it take you to solve this open problem? ;-)


Feel free to ask for hints. I will tell you story of R.B.M once you answer it right!

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