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 A058240 #14 Jun 19 2025 11:00:25 %S A058240 1,5,8,13,16,25,37,80,88,112,128,296,400,601,640,656,800,2029 %N A058240 Numbers k such that x^k + x^6 + 2 is irreducible over GF(3). %o A058240 (PARI) is(k) = polisirreducible(Mod(1, 3)*(x^k + x^6 + 2)); \\ _Jinyuan Wang_, Apr 15 2020 %Y A058240 Cf. A057476. %K A058240 nonn,more %O A058240 1,2 %A A058240 _Robert G. Wilson v_, Dec 01 2000 %E A058240 a(18) from _Jinyuan Wang_, Apr 15 2020