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Search: id:A116288
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| A116288 |
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Numbers n such that n times n+4 gives the concatenation of a number m with itself. |
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6
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| 7, 97, 451, 546, 689, 854, 997, 4380, 5617, 9997, 72728, 99997, 346531, 653466, 999997, 9090906, 9999997, 94117644, 99999997, 334665331, 336032385, 378253326, 390977440, 439928489, 483516484, 516483513, 560071508
(list; graph; listen)
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