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A135110
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Positive numbers such that the digital sum base 2 and the digital sum base 10 are in a ratio of 2:10.
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12
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32, 69, 136, 168, 276, 389, 514, 546, 596, 640, 672, 785, 848, 1284, 1289, 1298, 1793, 1798, 1856, 1888, 2058, 2080, 2184, 2369, 2562, 2594, 2698, 2896, 3089, 3589, 4164, 4169, 4178, 4196, 4353, 4358, 4376, 4385, 4416, 4448, 4484, 4489, 4498, 4628, 4673
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OFFSET
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1,1
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COMMENTS
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Subsequence of A227793. - Michel Marcus, Sep 23 2013
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LINKS
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Harvey P. Dale, Table of n, a(n) for n = 1..1000
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EXAMPLE
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a(1)=32, since ds_2(32):ds_10(32)=1:5=2:10.
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MATHEMATICA
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Select[Range[5000], 5*Total[IntegerDigits[#, 2]]==Total[ IntegerDigits[ #]]&] (* Harvey P. Dale, Sep 14 2012 *)
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PROG
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(PARI) is(n)=sumdigits(n)/hammingweight(n)==5 \\ Charles R Greathouse IV, Sep 22 2013
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CROSSREFS
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Cf. A007953.
Sequence in context: A153981 A264589 A100017 * A228665 A101539 A106700
Adjacent sequences: A135107 A135108 A135109 * A135111 A135112 A135113
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KEYWORD
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nonn,base
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AUTHOR
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Hieronymus Fischer, Dec 24 2007
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STATUS
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approved
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