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Omni-MATH / For each positive integer n, let a_(n) be the smallest nonnegative integer such that there is only one positive integer at most n that is relatively prime to all of n,n+1,…,n+a_(n)…

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problem

For each positive integer nn, let ana_{n} be the smallest nonnegative integer such that there is only one positive integer at most nn that is relatively prime to all of n,n+1,…,n+ann, n+1, \ldots, n+a_{n}. If n<100n<100, compute the largest possible value of n−ann-a_{n}.
Plain-text mathematical notation (without MathML)
For each positive integer n, let a_(n) be the smallest nonnegative integer such that there is only one positive integer at most n that is relatively prime to all of n,n+1,…,n+a_(n). If n<100, compute the largest possible value of n−a_(n).
Original LaTeX notation
For each positive integer $n$, let $a_{n}$ be the smallest nonnegative integer such that there is only one positive integer at most $n$ that is relatively prime to all of $n, n+1, \ldots, n+a_{n}$. If $n<100$, compute the largest possible value of $n-a_{n}$.

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