INMO 1991 Problem 1

Find the number of positive integers $n$ for which

(i) $n \leq 1991$ ;

(ii) 6 is a factor of $(n^2 + 3n +2)$ .

Dataset text AI-MO AoPS. Quoted with source.

Solutions

No solution is on olymmath yet. Official and human solutions come first when they arrive. AI solutions come after them, with a label.