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A087342
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Smallest multiple of n which is the concatenation of n successive numbers in descending order, or 0 if no such number exists.
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1
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1, 32, 321, 5432, 98765, 765432, 22212019181716, 98765432, 987654321, 19181716151413121110, 2019181716151413121110, 1312111098765432, 19181716151413121110987, 2928272625242322212019181716
(list; graph; refs; listen; history; internal format)
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