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A054565
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Numbers n such that 3 is the first digit of 3^n.
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1
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1, 18, 20, 22, 41, 43, 62, 64, 66, 83, 85, 87, 106, 108, 110, 127, 129, 131, 150, 152, 171, 173, 1, 75, 194, 196, 215, 217, 219, 236, 238, 240, 259, 261, 263, 280, 282, 284, 303, 305, 324, 326, 328, 347, 349, 368, 370, 372, 389, 391, 393, 412, 414, 416, 433
(list; graph; refs; listen; history; internal format)
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