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A063562
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Smallest power of 3 having just n 7's in its decimal representation.
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0
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1, 3, 23, 11, 47, 41, 50, 100, 123, 90, 174, 112, 179, 172, 201, 233, 168, 146, 211, 280, 247, 330, 294, 369, 411, 390, 401, 451, 374, 344, 448, 468, 516, 501, 536, 559, 574, 498, 523, 577, 662, 678, 722, 618, 615, 833, 686, 782, 717, 794, 707
(list; graph; refs; listen; history; internal format)
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