%I
%S 2,7,23,79,1087,66047,263167,16785407,1073807359,17180131327,
%T 68720001023,4398050705407,70368760954879,18014398777917439,
%U 18446744082299486207,5070602400912922109586440191999
%N Kynea primes: primes of the form (2^n+1)^22 = 4^n+2^(n+1)1.
%H Vincenzo Librandi, <a href="/A091514/b091514.txt">Table of n, a(n) for n = 1..30</a>
%H Eric Weisstein's World of Mathematics, <a href="http://mathworld.wolfram.com/KyneaNumber.html">Kynea Number</a>
%t lst={};Do[If[PrimeQ[p=4^n+2^(n+1)1], (*Print[p];*)AppendTo[lst, p]], {n, 10^2}];lst [From _Vladimir Joseph Stephan Orlovsky_, Aug 21 2008]
%o (MAGMA) [a: n in [0..60]  IsPrime(a) where a is 4^n+2^(n+1)1]; // Vincenzo Librandi, Dec 13 2011
%Y Cf. A091513.
%K nonn
%O 1,1
%A _Eric W. Weisstein_, Jan 17, 2004
%E Edited by _Ray Chandler_, Nov 15, 2004
%E The first term 2 added by Vincenzo Librandi, Dec 13 2011
