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A093251
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a(n) is the largest number such that all of a(n)'s length-n substrings are distinct and divisible by 51.
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0
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0, 51, 5612, 11224488, 9990933303, 666060333030, 77777551111188, 99999984, 888888180555555750, 33333030336666606066, 7777777730744444444904, 888888888084222222222021, 22222202002025555550500505, 99999999999975, 999999999990009666666666660006
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OFFSET
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1,2
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LINKS
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EXAMPLE
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a(4) is 11224488 because its length-4 substrings (1122, 1224, 2244, 2448, 4488) are all distinct and divisible by 51 and there is no larger number with this property.
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CROSSREFS
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KEYWORD
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base,nonn
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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