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A063628
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Smallest k such that 9^k has exactly n 2's in its decimal representation.
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2
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1, 3, 15, 12, 28, 26, 30, 39, 70, 50, 54, 82, 93, 106, 105, 80, 110, 121, 130, 135, 156, 175, 173, 183, 174, 211, 194, 264, 158, 216, 285, 251, 306, 262, 308, 298, 263, 322, 346, 323, 354, 276, 375, 380, 419, 350, 404, 432, 384, 465, 403
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OFFSET
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0,2
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LINKS
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MATHEMATICA
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a = {}; Do[k = 1; While[ Count[ IntegerDigits[9^k], 2] != n, k++ ]; a = Append[a, k], {n, 0, 50} ]; a
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CROSSREFS
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KEYWORD
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base,nonn
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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