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%I A236371 #6 Jan 25 2014 12:15:07
%S A236371 2,3,4,12,27,28,34,36,147,179,242,276,278,466,735,2371,4548,5606,
%T A236371 10324,82899
%N A236371 Numbers n such that 7^n - 12 is prime.
%C A236371 a(21) > 10^5.
%t A236371 Select[Range[1, 100000], PrimeQ[7^# - 12] &]
%o A236371 (PARI) for(n=1, 5*10^5, if(isprime(7^n-12), print1(n, ", ")))
%Y A236371 Cf. A236371, A217131, A191469, A090669, A096305, A217130, A217132, A152213.
%K A236371 nonn
%O A236371 1,1
%A A236371 _Robert Price_, Jan 23 2014

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