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 A350754 #7 Jan 15 2022 12:29:22 %S A350754 1,1,2,7,91,5144,1052251,706480081,1581055927702,12140606592270147, %T A350754 328173093539912361767,31831409057653120420337536, %U A350754 11234306829106179168513020426663,14576263867478482708779036941179024765,70075728362112833245095630646535639894359350 %N A350754 Number of semi-strong digraphs on n unlabeled nodes. %C A350754 A digraph is semi-strong if all its weakly connected components are strongly connected. %H A350754 Andrew Howroyd, <a href="/A350754/b350754.txt">Table of n, a(n) for n = 0..50</a> %F A350754 Euler transform of A035512. %Y A350754 The labeled version is A054948. %Y A350754 Row sums of A106238. %Y A350754 Cf. A035512. %K A350754 nonn %O A350754 0,3 %A A350754 _Andrew Howroyd_, Jan 14 2022