%I A070694
%S A070694 1,2,337536,585106,602056,2071960,11861410,20706120,54020170,72696726,
%T A070694 87584646,89445636,95895930,98583340,98595070,112204200,205739220,
%U A070694 279448296,292582836,337969690,349672456,432972780,437874186,474186576
%N A070694 Numbers n such that n+1, n^2+1, n^4+1, n^8+1 and n^16+1 are primes.
%t A070694 Do[ If[ PrimeQ[n + 1] && PrimeQ[n^2 + 1] && PrimeQ[n^4 + 1] && PrimeQ[n^8 
               + 1] && PrimeQ[n^16 + 1], Print[n]], {n, 1, 10^7}]
%Y A070694 Sequence in context: A124362 A058435 A151606 this_sequence A158346 A018854 
               A139181
%Y A070694 Adjacent sequences: A070691 A070692 A070693 this_sequence A070695 A070696 
               A070697
%K A070694 nonn,new
%O A070694 1,2
%A A070694 Robert G. Wilson v (rgwv(AT)rgwv.com), May 13 2002
%E A070694 a(7)-a(24) from Donovan Johnson (donovan.johnson(AT)yahoo.com), Dec 02 
               2009