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 A347914 #15 Oct 28 2021 03:57:49 %S A347914 1,2,16,400,28544,5531648,2818499584 %N A347914 Number of quasitransitive relations on n labeled nodes. %C A347914 Quasitransitivity is weaker than transitivity. %H A347914 Wikipedia, <a href="https://en.wikipedia.org/wiki/Quasitransitive_relation">Quasitransitive relation</a> %Y A347914 Cf. A006905 (number of transitive relations on n labeled nodes). %K A347914 nonn,hard,more %O A347914 0,2 %A A347914 _Dave Palfrey_, Sep 19 2021