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A137073
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Numbers n such that n and the square of n use only the digits 2, 3, 4, 6 and 9.
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1
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2, 3, 6, 63, 264, 632, 964, 2236, 4932, 4942, 4943, 22236, 22292, 26394, 26443, 49332, 49342, 49423, 49693, 49694, 62963, 66292, 66332, 222923, 494236, 494262, 494392, 494462, 496632, 499332, 499342, 499392, 499423, 499432, 626394, 996693, 996962, 2224694, 2496643, 2632343, 2632344, 2639364, 4946662, 4993332, 4993923, 4994236
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