Problema 3 ONM 2007

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Laurian Filip
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Problema 3 ONM 2007

Post by Laurian Filip »

Pentru ce numere naturale \( n \), \( n \geq 2 \), numarul \( a_n=(n-1)^{n^{n+1}}+(n+1)^{n^{n-1}} \) este divizibil cu \( n^n \)?
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