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This week's Riddler - no clue.

Now here’s this week’s Riddler, short but deadly, a Napoleonic puzzle. It comes to us from Andy Laursen of San Francisco.

Complete this series:

10, 11, 12, 13, 14, 15, 16, 17, 21, 23, 30, 33, …

(Yep, that’s it.)


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