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A063633
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Smallest power of 9 having just n 7's in its decimal representation.
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0
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1, 3, 14, 19, 24, 34, 25, 50, 64, 45, 87, 56, 92, 86, 112, 150, 84, 73, 142, 140, 162, 165, 147, 196, 207, 195, 211, 278, 187, 172, 224, 234, 258, 254, 268, 291, 287, 249, 342, 306, 331, 339, 361, 309, 396, 439, 343, 391, 413, 397, 533
(list; graph; refs; listen; history; internal format)
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