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 A243934 #15 Oct 12 2024 09:15:32 %S A243934 0,2,4,14,22,26,36,216,354,874,1018,2798,6116,6574,6922,8090,8398, %T A243934 12866,20816,54810 %N A243934 Numbers k such that 6^k + k^6 + 1 is prime. %t A243934 Select[Range[0, 1000], PrimeQ[6^# + #^6 + 1] &] %o A243934 (PARI) is(n)=ispseudoprime(6^n+n^6+1) \\ _Charles R Greathouse IV_, Jun 13 2017 %Y A243934 Cf. A100357, A215441, A216423, A215442, A215444. %K A243934 nonn,hard,more %O A243934 1,2 %A A243934 _Vaclav Kotesovec_, Jun 15 2014 %E A243934 a(19) from _Vaclav Kotesovec_, Jun 16 2014 %E A243934 a(20) from _Michael S. Branicky_, Oct 12 2024