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 A119005 #10 Jun 17 2025 22:16:38 %S A119005 1,4,16,48,416,3840,161280,215040,15482880,774144000 %N A119005 Number of n X n real symmetric (+1,-1)-matrices having maximal determinant (=A119003(n)). %H A119005 <a href="/index/De#determinants">Index entries for sequences related to maximal determinants</a> %Y A119005 Cf. A119004, A119003, A119004, A119007. %K A119005 nonn,more %O A119005 1,2 %A A119005 _Giovanni Resta_, May 08 2006 %E A119005 a(8)-a(10) from _Max Alekseyev_, Jun 17 2025