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A116242
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Numbers k such that k*(k+6) gives the concatenation of two numbers m and m-7.
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5
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8871, 9008, 83352839, 99000098, 329767122285, 670232877710, 738226276370, 933006600338, 999000000998, 3779410975143112, 3872816717528064, 4250291784692547, 4278630943941864, 4372036686326816, 4749511753491299
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OFFSET
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1,1
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LINKS
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EXAMPLE
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99000098 * 99000104 = 98010199//98010192, where // denotes concatenation.
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CROSSREFS
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KEYWORD
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nonn,base
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AUTHOR
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STATUS
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approved
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