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 A350911 #6 Jan 29 2022 20:14:01 %S A350911 1,1,2,3,6,11,56,609,39346,8728237,6126648298,14487876826313 %N A350911 Number of regular digraphs on n unlabeled nodes. %Y A350911 Row sums of A350910. %Y A350911 Cf. A000273, A005176, A329234, A350913. %K A350911 nonn,more %O A350911 0,3 %A A350911 _Andrew Howroyd_, Jan 29 2022