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 A058236 #10 Apr 17 2020 07:49:26 %S A058236 2,4,8,40,44,56,64,148,200,320,328,400,1280 %N A058236 Numbers n such that x^n + x^3 + 2 is irreducible over GF(3). %o A058236 (PARI) is(k) = polisirreducible(Mod(1, 3)*(x^k + x^3 + 2)); \\ _Jinyuan Wang_, Apr 15 2020 %Y A058236 Cf. A057461. %K A058236 nonn,more %O A058236 1,1 %A A058236 _Robert G. Wilson v_, Dec 01 2000 %E A058236 a(13) from _Jinyuan Wang_, Apr 15 2020