Question 146
Prove that for each positive integer $n$, there are pairwise relatively prime integers $k_0, k_1, \dots, k_n$, all strictly greater than 1, such that $k_0 k_1 \cdots k_n - 1$ is the product of two consecutive integers.
Math Olympiad Vault · MathNet 2008-part-05 — 164 problems (EN–VI)