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A063607
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Smallest power of 7 having just n 1's in its decimal representation.
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0
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1, 4, 6, 12, 19, 34, 24, 37, 38, 57, 52, 92, 96, 88, 116, 142, 133, 156, 108, 147, 115, 158, 209, 190, 180, 266, 200, 270, 240, 262, 263, 208, 279, 366, 339, 304, 352, 331, 406, 316, 407, 385, 396, 434, 437, 376, 386, 414, 470, 450, 551
(list; graph; refs; listen; history; internal format)
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