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 A058235 #10 Apr 17 2020 07:49:37 %S A058235 1,3,4,7,8,11,12,15,19,28,35,60,67,80,108,111,119,151,183,331,631,728, %T A058235 892,1276 %N A058235 Numbers n such that x^n + x^2 + 2 is irreducible over GF(3). %o A058235 (PARI) is(k) = polisirreducible(Mod(1, 3)*(x^k + x*x + 1)); \\ _Jinyuan Wang_, Apr 15 2020 %Y A058235 Cf. A057460. %K A058235 nonn,more %O A058235 1,2 %A A058235 _Robert G. Wilson v_, Dec 01 2000 %E A058235 a(24) from _Jinyuan Wang_, Apr 15 2020