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 A378866 #13 Dec 20 2024 12:36:33 %S A378866 0,2,3,118,498,1023,4262,6094,6382,26334,56062 %N A378866 Numbers k such that 5^k + 72 is prime. %e A378866 3 is a term because 5^3 + 72 = 197 is prime. %t A378866 Select[Range[0,5000],PrimeQ[5^#+72]&] %o A378866 (Magma) [k: k in [0..1000] |IsPrime (5^k+72)]; %Y A378866 Cf. A089142, A124621, A217133. %K A378866 nonn,more %O A378866 1,2 %A A378866 _Robert Price_, Dec 09 2024 %E A378866 a(8)-a(11) from _Michael S. Branicky_, Dec 19 2024