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 A051753 #29 Feb 16 2025 08:32:41 %S A051753 1,4,240,384,30720,7372800 %N A051753 Number of n X n (-1,0,1)-matrices having maximum determinant (=A003433(n)). %C A051753 This count includes equivalent matrices. %H A051753 Minfeng Wang, <a href="/A051753/a051753.cpp.txt">C++ program to calculate A051753</a> %H A051753 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/HadamardsMaximumDeterminantProblem.html">Hadamard's Maximum Determinant Problem</a> %H A051753 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/-101-Matrix.html">(-1, 0, 1)-Matrix</a> %H A051753 <a href="/index/Ha#Hadamard">Index entries for sequences related to Hadamard matrices</a> %H A051753 <a href="/index/De#determinants">Index entries for sequences related to maximal determinants</a> %Y A051753 Cf. A003433. %K A051753 nonn,more %O A051753 1,2 %A A051753 _Eric W. Weisstein_ %E A051753 a(4) from _Jud McCranie_, Oct 15 2000 %E A051753 a(5) from _Giovanni Resta_, Feb 20 2009 %E A051753 a(1)-a(5) confirmed and a(6) added by _Minfeng Wang_, May 29 2024