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 A126652 #15 Jan 27 2019 09:05:01 %S A126652 40,5,30,15,25,35,20,45,10 %N A126652 A 3 X 3 magic square with magic sum 75: the Loh-Shu square A033812 multiplied by 5. %C A126652 The magic sum is 75. See Figure C.6 in Appendix C in Maya Ahmed's PhD thesis. %H A126652 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 A126652 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. %H A126652 <a href="/index/Mag#magic">Index entries for sequences related to magic squares</a> %F A126652 a(n) = 5*A033812(n). - _M. F. Hasler_, Jan 26 2019 %e A126652 The magic square is: %e A126652 40 5 30 %e A126652 15 25 35 %e A126652 20 45 10 %Y A126652 Cf. A126653 = 3*A033812. %K A126652 fini,full,nonn,tabf %O A126652 1,1 %A A126652 _Parthasarathy Nambi_, Feb 08 2007 %E A126652 Edited by _M. F. Hasler_, Jan 26 2019