IBM Ponder This Puzzle

IBM Launches one puzzle every month in its "Ponder This" section. I just came to know about it day before yesterday and sent my solution for the active challenge.

Check my name at http://domino.research.ibm.com/Comm/wwwr_ponder.nsf/challenges/October2009.html

The Puzzle is not mathematical though :P

Complete the following sequence:
1, 13, 2, 1, 5, 3, 2, 1, 4, 4, 7, 3, 1, 5, 3, 5, ?, ?

Hint: The solution is related to a quote about mathematicians.
You can do it only if you know it. Thinking does not really help!! :)

PandeyJi (Nikhil Pandey) said that he was able to solve it. :)

Solution: IBM guys will post it on their link in 2 days anyways! :)

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