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MathNet 2014 Question 87

Math Olympiad Vault · MathNet 2014

Question 87

Let $f: \mathbb{N} \rightarrow \mathbb{N}$ be a function satisfying the following conditions:
(a) $f(1)=1$.
(b) $f(a) \leq f(b)$ whenever $a$ and $b$ are positive integers with $a \leq b$.
(c) $f(2 a)=f(a)+1$ for all positive integers $a$.

How many possible values can the 2014-tuple $(f(1), f(2), \ldots, f(2014))$ take?