# Base $$n$$?

$\overline{(n-1)(n-2)(n-3)(n-4)(n-5)}_n$ is divisible by $$n^2-1$$ for all $$n \geq 6$$

Clarification: The subscript means number base $$n$$. The line above the number means that $$(n-1), (n-2), \ldots$$ are digits of the number.

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