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Search: id:A115553
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| A115553 |
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Numbers n such that the concatenation of n with 9*n gives a square. |
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| 2041, 8164, 2366863905325444, 5325443786982249, 9467455621301776, 2040816326530612244897959183673469387755102041, 8163265306122448979591836734693877551020408164
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