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 A367464 #14 Aug 26 2024 21:09:15 %S A367464 2,6,9,18,42,132,139,482,523,524,859,909,948,979,1158,1741,2364,3519, %T A367464 4388,5952,6266,8564,12169,14448,54944,103526,116563,125918 %N A367464 Numbers k such that k^5*2^k - 1 is a prime. %t A367464 Select[Range[2500], PrimeQ[#^5*2^# - 1] &] (* _Amiram Eldar_, Nov 19 2023 *) %o A367464 (Magma) [k: k in [1..1000] | IsPrime(k^5*2^k-1)]; %Y A367464 Numbers k such that k^m*2^k - 1 is a prime: A000043 (m = 0), A002234 (m = 1), A058781 (m = 2), A367037 (m = 3), A367102 (m = 4), this sequence (m = 5). %Y A367464 Cf. A367421. %K A367464 nonn,more %O A367464 1,1 %A A367464 _Juri-Stepan Gerasimov_, Nov 18 2023 %E A367464 a(24)-a(25) from _Michael S. Branicky_, Nov 18 2023 %E A367464 a(26)-a(28) from _Michael S. Branicky_, Aug 26 2024