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Numbers n such that n^128+(n+1)^128 is a prime.
8

%I #20 Sep 04 2012 06:57:09

%S 31,37,65,191,255,287,359,786,836,1178,1229,1503,1601,1609,2093,2103,

%T 2254,2307,2471,2934,2978,3215,3220,3363,3402,3705,3724,3892,3894,

%U 3976,4094,4478,4490,4535,4566,4683,4749,4752,4789,4918,5064,6061,6162,6167

%N Numbers n such that n^128+(n+1)^128 is a prime.

%H Vincenzo Librandi, <a href="/A215431/b215431.txt">Table of n, a(n) for n = 1..250</a>

%t Select[Range[7000], PrimeQ[#^128 + (# + 1)^128] &]

%Y Cf. A027861, A153504, A154535, A155211, A174156, A174157, A215432.

%K nonn,easy

%O 1,1

%A _Vincenzo Librandi_, Aug 31 2012