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MathNet 2006 — Part 04 Question 87

Math Olympiad Vault · MathNet 2006 — Part 04

Question 87

A sequence of positive integers $\{a_{n}\}$ is given by
$$
a_{0}=m \quad \text{ and } \quad a_{n+1}=a_{n}^{5}+487
$$
for all $n \geq 0$. Determine all values of $m$ for which the sequence contains as many square numbers as possible.