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 A081262 #32 Feb 16 2025 08:32:48 %S A081262 1,0,1,48,48544,0,1125154039419854784 %N A081262 Number of distinct (modulo rotation and reflection) n X n associative magic squares. %H A081262 Go Kato, Shin-ichi Minato, <a href="https://arxiv.org/abs/1906.07461">Enumeration of associative magic squares of order 7</a>, arXiv:1906.07461 [math.CO], 2019. %H A081262 Walter Trump, <a href="http://www.trump.de/magic-squares/howmany.html">How many magic squares are there? - Results of historical and computer enumeration</a>. %H A081262 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/AssociativeMagicSquare.html">Associative Magic Square</a> %H A081262 <a href="/index/Mag#magic">Index entries for sequences related to magic squares</a> %Y A081262 Cf. A006052, A081263. %K A081262 nonn,hard,more %O A081262 1,4 %A A081262 _Eric W. Weisstein_, Mar 14 2003 %E A081262 a(5) from _Jud McCranie_, Mar 17 2003 %E A081262 a(6) from _Max Alekseyev_, May 22 2008 %E A081262 a(7) from _Go Kato_, Nov 30 2018