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 A128883 #9 Jan 31 2025 17:37:17 %S A128883 1,14,14,4,11,7,6,9,8,10,10,5,13,2,3,15 %N A128883 A 4 X 4 magic square with sum 33 read by rows. %H A128883 A. Skalli, <a href="https://sites.google.com/site/aliskalligvaen/home-page/-magic-cube-with-gaudi-s-square">Magic cube with Gaudi's square</a> %H A128883 Wikipedia, <a href="http://en.wikipedia.org/wiki/Magic_square">The Sagrada Familia magic square</a>. %e A128883 The magic square is: %e A128883 1 14 14 4 %e A128883 11 7 6 9 %e A128883 8 10 10 5 %e A128883 13 2 3 15 %Y A128883 Cf. A126710, A126976, A126977, A126647, A126648, A126649, A126650, A126651, A126652, A126653, A126654, A126709. %K A128883 fini,full,nonn,tabf %O A128883 1,2 %A A128883 _Parthasarathy Nambi_, Apr 18 2007