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September 30, 2014

September 30, 2014

Posted by **Anonymous** on Saturday, April 13, 2013 at 9:23pm.

- math -
**Reiny**, Saturday, April 13, 2013 at 10:32pma1 = 2^0 - 1 = 0

a2 = 2^1 - 1 = 1

a3 = 2^2 - 1 = 3

......

etc

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