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A063592
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Smallest power of 5 having just n 7's in its decimal representation.
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0
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1, 7, 15, 34, 31, 61, 42, 55, 74, 82, 96, 134, 110, 127, 111, 160, 164, 126, 141, 194, 247, 250, 223, 255, 269, 281, 258, 292, 378, 321, 276, 340, 435, 418, 407, 412, 425, 475, 365, 422, 462, 476, 533, 479, 495, 429, 538, 526, 543, 542, 625
(list; graph; refs; listen; history; internal format)
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