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 A215442 #26 Jun 01 2025 15:06:43 %S A215442 0,1,7,11,35,863,3503,5101 %N A215442 Numbers k such that 5^k + k^5 + 1 is prime. %C A215442 a(9) > 2*10^5. - _Robert Price_, May 17 2014 %t A215442 Select[Range[0, 3000], PrimeQ[5^# + #^5 + 1] &] %o A215442 (Magma) [k: k in [0..200] | IsPrime(5^k + k^5 + 1)]; %o A215442 (PARI) is(n)=ispseudoprime(5^n+n^5+1) \\ _Charles R Greathouse IV_, May 22 2017 %Y A215442 Cf. A215438. %K A215442 nonn,more %O A215442 1,3 %A A215442 _Vincenzo Librandi_, Sep 03 2012 %E A215442 a(7)-a(8) from _Robert Price_, May 17 2014