Thread: Number Sequence Puzzle
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Old 06-20-2010, 05:41 AM   #1
pdurrant
The Grand Mouse 高貴的老鼠
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Number Sequence Puzzle
What is the next number in this sequence?

1
11
21
1211
111221
312211
13112221

Answers in spoiler tags as usual, please.

I found this puzzle while wandering various puzzle pages, but I can no longer remember which web page was the one where I first found it.
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