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A033984 Odd integers n such that 2^n == 16 (mod n). 14
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 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

The odd terms of A015924.

For all m, 2^A128121(m)-1 belongs to this sequence.

LINKS

Max Alekseyev, Table of n, a(n) for n = 1..790 (all terms below 10^14)

MATHEMATICA

Select[Range[1, 510000001, 2], PowerMod[2, #, #]==16&] (* Harvey P. Dale, Dec 11 2010 *)

CROSSREFS

Besides initial terms, the sequence coincides with A173138.

Cf. A015924, A173138, A173572.

Sequence in context: A158898 A210846 A068251 * A123062 A194194 A110719

Adjacent sequences:  A033981 A033982 A033983 * A033985 A033986 A033987

KEYWORD

nonn

AUTHOR

Joe K. Crump (joecr(AT)carolina.rr.com)

EXTENSIONS

Edited and terms 1,7 prepended by Max Alekseyev, Aug 09 2012

STATUS

approved

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Last modified March 28 05:07 EDT 2017. Contains 284182 sequences.