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 A367421 #16 Aug 26 2024 20:15:40 %S A367421 1,41,53,231,532,1632,1642,9701,13372,19613,25518,31929,92476,97433 %N A367421 Numbers k such that k^5*2^k + 1 is a prime. %t A367421 Select[Range[2000], PrimeQ[#^5*2^# + 1] &] (* _Amiram Eldar_, Nov 18 2023 *) %o A367421 (Magma) [k: k in [1..1000] | IsPrime(k^5*2^k+1)]; %Y A367421 Numbers k such that k^m*2^k + 1 is a prime: 0, 1, 2, 4, 8, 16, .. (m = 0), A005849 (m = 1), A058780 (m = 2), A357612 (m = 3), A366422 (m = 4), this sequence (m = 5). %K A367421 nonn,more %O A367421 1,2 %A A367421 _Juri-Stepan Gerasimov_, Nov 18 2023 %E A367421 a(10)-a(12) from _Michael S. Branicky_, Nov 18 2023 %E A367421 a(13)-a(14) from _Michael S. Branicky_, Aug 26 2024