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A109076 Numbers n such that 11^n + 2 is prime. 8
0, 1, 5, 9, 287, 8273 (list; graph; refs; listen; history; internal format)
OFFSET

1,3

COMMENTS

No further terms < 100000. - Ray Chandler (rayjchandler(AT)sbcglobal.net), Jul 30 2011

EXAMPLE

11^5 + 2 = 161053 is prime, hence 5 is a term.

MATHEMATICA

Do[If[PrimeQ[11^n + 2], Print[n]], {n, 0, 5000}]

CROSSREFS

Sequence in context: A002657 A046093 A097086 * A101683 A098135 A112259

Adjacent sequences:  A109073 A109074 A109075 * A109077 A109078 A109079

KEYWORD

more,nonn

AUTHOR

Ryan Propper (rpropper(AT)stanford.edu), Jun 17 2005

EXTENSIONS

8273 from Jason Earls (zevi_35711(AT)yahoo.com), Feb 29 2008

Edited by N. J. A. Sloane (njas(AT)research.att.com), Mar 02 2008

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Last modified February 16 11:30 EST 2012. Contains 205907 sequences.