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 A302088 #24 Sep 02 2024 08:12:17 %S A302088 3,5,9,183,561 %N A302088 Numbers k such that 5*k^k + 4 is prime. %C A302088 a(6), if it exists, is greater than 5000. - _Vaclav Kotesovec_, Apr 01 2018 %C A302088 a(6), if it exists, is greater than 20000. - _Michael S. Branicky_, Sep 02 2024 %t A302088 Select[Range[1, 1000], PrimeQ[5*#^# + 4] &] (* _Vaclav Kotesovec_, Apr 01 2018 *) %o A302088 (PARI) for(n=0, 500, if(isprime(5*n^n+4), print1(n", "))) %o A302088 (PARI) lista(nn) = forstep(n=1, nn, 2, if(ispseudoprime(5*n^n+4), print1(n, ", "))); \\ _Altug Alkan_, Apr 01 2018 %Y A302088 Numbers k such that b*k^k + b - 1 is prime: A110932 (b=2), A160360 (b=3), A301520 (b=4), this sequence (b=5), A302090 (b=6). %Y A302088 Cf. A302089. %K A302088 nonn,more,hard %O A302088 1,1 %A A302088 _Seiichi Manyama_, Apr 01 2018 %E A302088 a(5) from _Vaclav Kotesovec_, Apr 01 2018