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A116167
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Numbers k such that k concatenated with k+1 gives the product of two numbers which differ by 7.
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6
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7, 493, 607, 629, 757, 17927, 33247, 93869, 19467217, 31223879, 72757727, 13454739732766891651472740499, 40093333713615672956030023507, 48089152118689474641229584727, 66424317743191484432891678269
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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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72757727//72757728 = 85298137 * 85298144, 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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