This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A219051 #21 Nov 11 2023 10:39:54
%S A219051 4,7,11,13,29,32,36,44,79,157,197,341,467,996,1421,2479,3269,5203,
%T A219051 7987,9341,14836,26047,47816,64304,100693,127597,167167,174697,182089,
%U A219051 198791
%N A219051 Numbers k such that 3^k - 34 is prime.
%C A219051 a(31) > 2*10^5. - _Robert Price_, Nov 23 2013
%e A219051 For k = 4, 3^4 - 34 = 47 and 47 is prime. Hence k = 4 is included in the sequence.
%t A219051 Do[If[PrimeQ[3^n - 34], Print[n]], {n, 1, 10000}]
%t A219051 Select[Range[10000], PrimeQ[3^# - 34] &] (* _Alonso del Arte_, Nov 10 2012 *)
%o A219051 (PARI) is(n)=isprime(3^n-34) \\ _Charles R Greathouse IV_, Feb 17 2017
%Y A219051 Cf. Sequences of numbers k such that 3^k + m is prime:
%Y A219051 (m = 2) A051783, (m = -2) A014224, (m = 4) A058958, (m = -4) A058959,
%Y A219051 (m = 8) A217136, (m = -8) A217135, (m = 10) A217137, (m = -10) A217347,
%Y A219051 (m = 14) A219035, (m = -14) A219038, (m = 16) A205647, (m = -16) A219039,
%Y A219051 (m = 20) A219040, (m = -20) A219041, (m = 22) A219042, (m = -22) A219043,
%Y A219051 (m = 26) A219044, (m = -26) A219045, (m = 28) A219046, (m = -28) A219047,
%Y A219051 (m = 32) A219048, (m = -32) A219049, (m = 34) A219050, (m = -34) A219051. Note that if m is a multiple of 3, 3^k + m is also a multiple of 3 (for k greater than 0), and as such isn't prime.
%K A219051 nonn,more
%O A219051 1,1
%A A219051 _Nicolas M. Perrault_, Nov 10 2012
%E A219051 a(21)-a(30) from _Robert Price_, Nov 23 2013