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 A368352 #19 Aug 26 2024 11:43:08 %S A368352 1,1,5,42,2294,71753,2737409,114381074 %N A368352 a(n) is the maximal determinant of an n X n Hankel matrix using the integers 1 to 2*n - 1. %H A368352 Lucas A. Brown, <a href="https://github.com/lucasaugustus/oeis/blob/main/A368351%2B2.py">Python program</a>. %H A368352 Wikipedia, <a href="https://en.wikipedia.org/wiki/Hankel_matrix">Hankel matrix</a>. %e A368352 a(2) = 5: %e A368352 3, 1; %e A368352 1, 2. %e A368352 a(3) = 42: %e A368352 2, 5, 3; %e A368352 5, 3, 4; %e A368352 3, 4, 1. %e A368352 a(4) = 2294: %e A368352 2, 3, 6, 7; %e A368352 3, 6, 7, 1; %e A368352 6, 7, 1, 5; %e A368352 7, 1, 5, 4. %Y A368352 Cf. A350931 (maximal absolute value), A368351 (minimal). %Y A368352 Cf. A350937 (minimal permanent), A350938 (maximal permanent). %K A368352 nonn,hard,more %O A368352 0,3 %A A368352 _Stefano Spezia_, Dec 22 2023 %E A368352 a(6)-a(7) from _Lucas A. Brown_, Aug 26 2024