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A063577
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Smallest power of 4 having just n 2's in its decimal representation.
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0
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1, 4, 9, 25, 36, 54, 45, 56, 68, 106, 87, 98, 100, 203, 140, 154, 160, 174, 165, 263, 246, 243, 157, 234, 276, 280, 338, 308, 343, 371, 335, 299, 427, 394, 497, 475, 473, 405, 524, 467, 577, 485, 586, 509, 492, 644, 464, 677, 563, 616, 582
(list; graph; refs; listen; history; internal format)
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