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 A116198 #7 Feb 02 2023 13:24:56 %S A116198 7,0,5,2,4,6,3,8,1 %N A116198 A 3 x 3 magic square read by rows. %C A116198 The magic sum is 12. %H A116198 Guoce Xin, <a href="http://www.combinatorics.net.cn/homepage/xin/files/papers/magicsquare.pdf">Constructing All Magic Squares of Order Three</a>. %e A116198 The magic square is: %e A116198 7 0 5 %e A116198 2 4 6 %e A116198 3 8 1 %Y A116198 Cf. A126710, A126976, A126977, A126647, A126648, A126649, A126650, A126651, A126652, A126653, A126654, A126709. %K A116198 fini,full,nonn,tabf %O A116198 1,1 %A A116198 _Parthasarathy Nambi_, Apr 08 2007