Problem 9 from prior weeks.

Correct!

Explanation:

Solution - if you divide all the terms of the series by 2 , then you'll get ; 2, 3, 5, 7, 11, 13, 17, 19, 23 ... which are the first nine consecutive primes.  The next prime will naturally be 29.  The double will give 58.  So the next one will be 58.

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