%I

%S 349,2447992580749,59088590134729116001

%N Primes of the form (17^n - 3^n)/14.

%t a={};Do[p=(17^n-3^n)/14;If[PrimeQ[p],AppendTo[a,p]],{n,1,10^2}];a

%Y Cf. A128031.

%K nonn,bref

%O 1,1

%A _Vladimir Joseph Stephan Orlovsky_, May 16 2008