6:10 AM
A quick search in Approach0 reveals this question: Diophantine equation : $N= \frac{x^2+y}{x+y^2}$. And if there are more copies of this problem on the site, the would not be very surprising to me. — Martin Sleziak 1 min ago
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In the search of a question
When you are looking for a specific question (using Approach0 ...