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A119511
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a(n) is the smallest positive integer whose square starts with precisely n identical digits.
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9
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1, 15, 149, 2357, 10541, 57735, 745356, 1490712, 182574186, 2357022604, 298142397, 7453559925, 1490711985, 10540925533895, 74535599249993, 105409255338946, 7453559924999299, 14907119849998598, 471404520791031683
(list; graph; refs; listen; history; internal format)
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