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Search: id:A116129
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| A116129 |
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Numbers n such that n concatenated with n-4 gives the product of two numbers which differ by 4. |
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6
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| 11, 101, 1001, 10001, 100001, 1000001, 10000001, 100000001, 1000000001, 10000000001, 13223140496, 20661157025, 29752066116, 40495867769, 52892561984, 66942148761, 82644628100, 100000000001, 1000000000001
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