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 A125522 #4 May 29 2025 22:09:18 %S A125522 2247,3514,8762,5475,5376,8861,3613,2148,7851,6386,1138,4623,4524, %T A125522 1237,6485,7752 %N A125522 A 4 X 4 permutation-free magic square with magic sum 19998. %C A125522 The magic sum is 19998. For additional details see the paper by Hossein Behforooz. %D A125522 Hossein Behforooz, "Permutation-free magic squares", J. Recreational Mathematics, vol. 33, (2004-2005), pp. 103-106. See Figure 3 on page 105. %e A125522 The magic square is: %e A125522 2247, 3514, 8762, 5475 %e A125522 5376, 8861, 3613, 2148 %e A125522 7851, 6386, 1138, 4623 %e A125522 4524, 1237, 6485, 7752 %Y A125522 Cf. A080992. %K A125522 fini,nonn,tabf,full %O A125522 1,1 %A A125522 _Parthasarathy Nambi_, Jan 22 2007