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 A350796 #5 Jan 22 2022 18:31:01 %S A350796 1,1,1,2,7,25,108,513,2690,15230,92361,594669,4040283,28817783, %T A350796 214898429,1669663193,13476692136,112722792293,974931812942, %U A350796 8702563358405,80039193725904,757342429877879,7362651015248190,73451961108974776,751144076656119144,7866092802569673370 %N A350796 Number of unlabeled digraphs with n arcs and a global source and sink. %o A350796 (PARI) A350796seq(15) \\ See PARI link in A350794 for program code. %Y A350796 Column sums of A350795. %Y A350796 Cf. A350752, A350794, A350798, A350906, A350907. %K A350796 nonn %O A350796 0,4 %A A350796 _Andrew Howroyd_, Jan 21 2022