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A116276
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Numbers k such that k*(k+5) gives the concatenation of two numbers m and m-2.
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5
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70, 79822843, 69852478553064869297984899963805, 77473062193002372448027740546437, 77747359197583788609974143907617, 84341826458653210947638195982113, 85367942837521291760016984490249
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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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79822843 * 79822848 = 63716866//63716864, 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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