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 A364079 #12 Jan 05 2024 15:49:49 %S A364079 1,10,21,25,31,1083,40485,82516 %N A364079 Numbers k such that (18^k + 1)^2 - 2 is prime. %C A364079 Such primes are sometimes called Kynea primes of base 18. %H A364079 Prime-Wiki, <a href="https://www.rieselprime.de/ziki/Carol-Kynea_prime">Carol-Kynea prime</a>. %H A364079 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/Near-SquarePrime.html">Near-Square Prime</a>. %o A364079 (PARI) for(k=1,1200,ispseudoprime((18^k+1)^2-2)&&print1(k,", ")) %Y A364079 Cf. A091513 (b=2), A100902 (b=6), A100904 (b=10), A364077 (b=12), A100906 (b=14), A364081 (b=20), A100908 (b=22). %Y A364079 Cf. A364078. %K A364079 nonn,hard,more %O A364079 1,2 %A A364079 _Jeppe Stig Nielsen_, Jul 03 2023