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A063608
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Smallest power of 7 having just n 2's in its decimal representation.
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0
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1, 4, 12, 10, 20, 32, 30, 68, 49, 73, 82, 93, 125, 103, 109, 131, 146, 119, 161, 113, 172, 163, 191, 197, 199, 240, 232, 243, 210, 217, 288, 317, 292, 289, 321, 333, 319, 327, 276, 374, 358, 397, 354, 357, 373, 452, 428, 489, 391, 516, 470
(list; graph; refs; listen; history; internal format)
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