RoseCode

Problem #272

Counting the solutions
 Public ★(x13) 10/17/15 by Philippe_57721 7xp Math 5.0%

How many pairs of positive integers $(a,b) \le 10^9$ are there such as :
$$\frac{a^2}{2ab^2 - b^3 + 1} \textrm{ is an integer}$$
[My timing: instant]

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