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 A382786 #47 May 04 2025 10:00:38 %S A382786 7954,22102,33054,135156 %N A382786 Numbers k such that 5^k + k is prime. %C A382786 All terms must end in the digit 2, 4, 6 or 8, otherwise 5^k + k is divisible by 2 or 5, which is not prime. - _Jakub Buczak_, May 04 2025 %t A382786 Select[Range[35000], PrimeQ[5^# + #] &] (* _Nico Puada_, Apr 24 2025 *) %Y A382786 Cf. A104745, A052007, A057900, A057909, A058046. %K A382786 nonn,hard,more %O A382786 1,1 %A A382786 _Nico Puada_, Apr 24 2025 %E A382786 a(4) corrected by _Jakub Buczak_, May 04 2025