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 A358568 #11 Dec 03 2022 09:19:17 %S A358568 1,0,4,74,1781,58180,2579770,152337045 %N A358568 a(n) is the maximal determinant of an n X n Toeplitz matrix using the integers 0 to 2*(n - 1). %H A358568 Lucas A. Brown, <a href="https://github.com/lucasaugustus/oeis/blob/main/A358567%2B8.py">Python program</a>. %H A358568 Wikipedia, <a href="http://en.wikipedia.org/wiki/Toeplitz_matrix">Toeplitz Matrix</a> %e A358568 a(2) = 4: %e A358568 [2, 0; %e A358568 1, 2] %e A358568 a(3) = 74: %e A358568 [4, 0, 2; %e A358568 3, 4, 0; %e A358568 1, 3, 4] %Y A358568 Cf. A350931 (integers from 1 to 2*n - 1), A358567 (minimal), A358569 (minimal permanent), A358570 (maximal permanent). %K A358568 nonn,hard,more %O A358568 0,3 %A A358568 _Stefano Spezia_, Nov 22 2022 %E A358568 a(5)-a(7) from _Lucas A. Brown_, Dec 03 2022