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 A368354 #8 Dec 30 2023 23:47:40 %S A368354 1,0,2,31,1781,58180 %N A368354 a(n) is the maximal determinant of an n X n Hankel matrix using the integers 0 to 2*(n - 1). %C A368354 a(6) >= 2189560. %H A368354 Wikipedia, <a href="https://en.wikipedia.org/wiki/Hankel_matrix">Hankel matrix</a>. %e A368354 a(2) = 2: %e A368354 2, 0; %e A368354 0, 1. %e A368354 a(3) = 31: %e A368354 1, 4, 2; %e A368354 4, 2, 3; %e A368354 2, 3, 0. %e A368354 a(4) = 1781: %e A368354 1, 2, 5, 6; %e A368354 2, 5, 6, 0; %e A368354 5, 6, 0, 4; %e A368354 6, 0, 4, 3. %Y A368354 Cf. A368353 (minimal), A368355 (maximal absolute value). %Y A368354 Cf. A358569 (minimal permanent), A358570 (maximal permanent). %K A368354 nonn,hard,more %O A368354 0,3 %A A368354 _Stefano Spezia_, Dec 22 2023