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 A076020 #11 Dec 09 2021 00:48:23 %S A076020 0,0,0,1,3,6,24,178,1328 %N A076020 Number of systems with n elements with one binary operation satisfying the equation B(AB)=A (semisymmetric quasigroups). This gives numbers of systems which are isomorphic to their transpose but are noncommutative. %Y A076020 Cf. A076016-A076021. %K A076020 nonn,hard,more %O A076020 1,5 %A A076020 Richard C. Schroeppel, Oct 29 2002