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 A285053 #13 May 04 2019 00:42:03 %S A285053 1,4,118,27080 %N A285053 Multiplications between idempotent equivalence classes for n X n matrices over GF(2). %C A285053 With the n X n matrices over GF(2) construct 3-tuples (a,b,c) where a*b = c. Map each of the three elements to their idempotent under self multiplication. Filter on unique 3-tuples. %Y A285053 The idempotents are enumerated in A132186. %K A285053 nonn,more %O A285053 1,2 %A A285053 _Chad Brewbaker_, Apr 08 2017