Tuesday, March 13, 2018

Problem 19: Next Number in the Sequence

1, 1, 2, 3, 3, 5, 4, 6, 5, 9, 6, 9, 7, 13, 8, 12, 9, 17, 10, 15, 11, 21, 12, 18, 13, 25, 14, ?

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