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 A059006 #15 Dec 22 2024 20:12:56 %S A059006 2,3,6,9,18,65,66,287,354,1425,3743,5598 %N A059006 Numbers k such that x^k + x^2 + 1 is irreducible over GF(7). %C A059006 No terms == 1 (mod 3), as e.g. 2^k + 2^2 + 1 == 0 mod 7 when k == 1 (mod 3). - _Robert Israel_, Dec 22 2024 %p A059006 R:= NULL: %p A059006 for k from 1 to 10000 do %p A059006 if Irreduc(x^k + x^2 + 1) mod 7 then R:= R, k fi %p A059006 od: %p A059006 R; # _Robert Israel_, Dec 22 2024 %Y A059006 Cf. A057460, A058857. %K A059006 nonn %O A059006 1,1 %A A059006 _Robert G. Wilson v_, Jan 16 2001 %E A059006 2 inserted and more terms from _Robert Israel_, Dec 22 2024