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 A103744 #12 Nov 11 2019 09:23:15 %S A103744 8,8,48,48,48,56,56,56,56,96,96,304 %N A103744 There are, up to equivalence (i.e., symmetries and rotations), 880 magic squares of order 4 (cf. A006052). Say that two squares are of the same type if one can be obtained from the other by complementing (replacing each entry i with 17-i) and applying symmetries. There are 12 types. Sequence gives the population of each of the types, arranged in nondecreasing order. %D A103744 William H. Benson and Ostwald Jacoby, New Recreations with Magic Squares, Dover Publications, New York, 1976. %D A103744 Rene Descombes, La magie du carré, Vuibert, 2004. %D A103744 Henry E. Dudeney, Amusements in Mathematics, Dover Publications, New York. %H A103744 Aale de Winkel, <a href="http://www.magichypercubes.com/Encyclopedia/DataBase/Squares_Order4.html">Squares of order 4</a> %K A103744 nonn,fini,full %O A103744 1,1 %A A103744 _Philippe Deléham_, Mar 28 2005