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 A216424 #15 Sep 08 2022 08:46:03 %S A216424 2,16,74,164,518,796,8756,12598 %N A216424 Numbers k such that 4^k + k^4 - 1 is prime. %C A216424 a(9) > 10^5. - _Robert Price_, Feb 04 2014 %t A216424 Select[Range[0, 5000], PrimeQ[4^# + #^4 - 1] &] %o A216424 (Magma) [n: n in [0..800] | IsPrime(4^n+n^4-1)]; %o A216424 (PARI) is(n)=ispseudoprime(4^n+n^4-1) \\ _Charles R Greathouse IV_, Jun 13 2017 %Y A216424 Cf. A100357, A215434-A215437, A215439-A215446, A216375. %K A216424 nonn %O A216424 1,1 %A A216424 _Vincenzo Librandi_, Sep 07 2012 %E A216424 a(7)-a(8) from _Robert Price_, Feb 04 2014