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A033984
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Odd integers n such that 2^n == 16 (mod n).
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15
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1, 7, 40369, 673663, 990409, 1697609, 2073127, 6462649, 7527199, 7559479, 14421169, 21484129, 37825753, 57233047, 130647919, 141735559, 179203369, 188967289, 218206489, 259195009, 264538057, 277628449, 330662479, 398321239, 501126487
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OFFSET
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1,2
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COMMENTS
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The odd terms of A015924.
For all m, 2^A128121(m)-1 belongs to this sequence.
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LINKS
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Max Alekseyev, Table of n, a(n) for n = 1..790 (all terms below 10^14)
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MATHEMATICA
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Select[Range[1, 510000001, 2], PowerMod[2, #, #]==16&] (* Harvey P. Dale, Dec 11 2010 *)
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CROSSREFS
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Besides initial terms, the sequence coincides with A173138.
Cf. A015924, A173138, A173572.
Sequence in context: A158898 A210846 A068251 * A348643 A123062 A300201
Adjacent sequences: A033981 A033982 A033983 * A033985 A033986 A033987
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KEYWORD
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nonn
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AUTHOR
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Joe K. Crump (joecr(AT)carolina.rr.com)
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EXTENSIONS
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Edited and terms 1,7 prepended by Max Alekseyev, Aug 09 2012
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STATUS
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approved
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