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 A379694 #19 Jan 03 2025 18:45:12
%S A379694 1,2,3,5,9,24,49,1466,4588,27804,60126
%N A379694 Numbers k such that 4^k - prime(k) is prime.
%C A379694 a(12) > 10^5. - _Michael S. Branicky_, Jan 02 2025
%e A379694 2 in sequence because 4^2 - prime(2) = 16 - 3 = 13 (prime).
%e A379694 4 is not in sequence because 4^4 - prime(4) = 256 - 7 = 249 (not prime).
%t A379694 Do[If[PrimeQ[4^n-Prime[n]],Print[n]],{n,1,3*10^4}]
%o A379694 (Magma) [n: n in [0..1500] | IsPrime(4^n-NthPrime(n))];
%Y A379694 Cf. A078583, A110066.
%K A379694 nonn,more
%O A379694 1,2
%A A379694 _Vincenzo Librandi_, Dec 30 2024
%E A379694 a(11) from _Michael S. Branicky_, Jan 01 2025