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Jianing Song, <a href="/A331788/b331788.txt">Table of n, a(n) for n = 1..1000</a>
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a(n) is the smallest m such that for any N, at least one of S(N), S(N+1), ..., S(N+m-1) is divisible by n, where S(N) be is the sum of digits of N.
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