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Math Help - Generating a series

  1. #1
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    Generating a series

    hi , how can one generate the following series: A046034 - OEIS
    Is there any formula to it?
    I thought of calculating the nth term as:
    convert the nth term to base 4, then map the digits as 0->2, 1->3,2->5 and 3->7 and then convert the resultant exp to base 10
    but it doesn't seem to work.
    Any other way?
    Last edited by pranay; March 27th 2011 at 10:14 AM.
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  2. #2
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    In the link that you gave, there's a section labeled PROG. It contains what appears to be PARI/GP code for the sequence.
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