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A063625
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Smallest k such that 8^k has exactly n 9's in its decimal representation.
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0
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1, 4, 17, 11, 30, 40, 55, 50, 31, 89, 62, 103, 85, 115, 114, 118, 111, 157, 135, 160, 174, 177, 159, 172, 215, 208, 247, 241, 266, 273, 307, 243, 201, 245, 297, 282, 264, 322, 320, 391, 363, 428, 377, 416, 413, 359, 393, 414, 479, 457, 422
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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[8^k], 9] != 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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