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 A300981 #19 Sep 02 2024 16:28:20 %S A300981 3,9,27,249 %N A300981 Numbers k such that k^k - 10 is a prime. %C A300981 a(5), if it exists, is greater than 5000. - _Vaclav Kotesovec_, Mar 25 2018 %C A300981 a(5), if it exists, is greater than 25000. - _Michael S. Branicky_, Sep 02 2024 %t A300981 Select[Range[1000], PrimeQ[#^# - 10] &] (* _Vaclav Kotesovec_, Mar 25 2018 *) %o A300981 (PARI) isok(k) = ispseudoprime(k^k - 10); \\ _Altug Alkan_, Mar 17 2018 %Y A300981 Numbers k such that k^k + b is a prime: this sequence (b=-10), A300976 (b=-5), A100408 (b=-2), A100407 (b=2), A166852 (b=3), A100837 (b=4), A100838 (b=7), A300292 (b=9), A100839 (b=10), A173974 (b=43). %K A300981 nonn,hard,more %O A300981 1,1 %A A300981 _Seiichi Manyama_, Mar 17 2018