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 A133176 #7 Feb 28 2020 05:34:11 %S A133176 0,0,0,1,0,3,1,13,7,59,70,553,1277,7661,32395,199205,1149306,7752187, %T A133176 53913897 %N A133176 Isotopy classes of unordered Latin bi-trades of size n. %H A133176 I. M. Wanless, <a href="https://ajc.maths.uq.edu.au/pdf/39/ajc_v39_p247.pdf">A computer enumeration of small latin trades</a>, Australas. J. Combin. 39, (2007) 247-258. %Y A133176 Cf. A007083. %K A133176 nonn,more %O A133176 1,6 %A A133176 _Ian Wanless_, Oct 11 2007