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A053924
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Numbers n such that n^2 contains only digits {2,4,9}.
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1
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2, 3, 7, 173, 212, 307, 1557, 3038, 4788, 6557, 9607, 70173, 222327, 649788, 7015857, 17173882, 22349368, 30402212, 1514009327, 5470304327, 67081614057, 171739460943, 205534649693, 473521111382, 666553067838
(list; graph; refs; listen; history; internal format)
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