olymmath

CZ-SK-MO 2004 Problem 4

    Find all positive integers nn such that ∑k=1nnk!\sum_{k=1}^{n}\frac{n}{k!} is an integer.

    Dataset text AI-MO AoPS. Quoted with source.

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    Locator cz-sk-mo/2004/p4 · Tag 2R1SKVZRVS · Edit this page on GitHub · Keys: j next, k previous