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 A126647 #12 Jul 12 2018 11:41:28 %S A126647 25,1,23,6,10,12,14,3,20,16,2,24,13,8,18,11,7,21,9,17,15,19,5,22,4 %N A126647 A 5 x 5 Ornate magic square. %C A126647 The magic sum is 65. See Figure C.8 in Appendix C of Maya Ahmed's thesis. %H A126647 Maya Mohsin Ahmed, <a href="https://arxiv.org/abs/math/0405476">Algebraic Combinatorics of Magic Squares</a>, arXiv:math/0405476 [math.CO], 2004. PhD thesis. %H A126647 Maya Mohsin Ahmed, <a href="https://www.jstor.org/stable/4145267">How many squares are there, Mr. Franklin?: Constructing and Enumerating Franklin Squares</a>, Amer. Math. Monthly, Vol. 111, 2004, pp. 394-410. %e A126647 The magic square is: %e A126647 25 1 23 6 10 %e A126647 12 14 3 20 16 %e A126647 2 24 13 8 18 %e A126647 11 7 21 9 17 %e A126647 15 19 5 22 4 %o A126647 (PARI) [25,1,23,6,10; 12,14,3,20,16; 2,24,13,8,18; 11,7,21,9,17; 15,19,5,22,4] \\ _Charles R Greathouse IV_, Dec 12 2014 %K A126647 fini,full,nonn,tabf %O A126647 1,1 %A A126647 _Parthasarathy Nambi_, Feb 08 2007