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 A350751 #5 Jan 14 2022 19:45:53 %S A350751 1,0,0,1,1,3,7,27,120,590,3172,18291,112597,731646,5002261,35805035, %T A350751 267427870,2077890719,16753007782,139843832074,1206213748404, %U A350751 10731971520412,98340872850392,926788397662602,8971598464914888,89105060389927172,907030917078092542 %N A350751 Number of unlabeled strongly connected oriented graphs with n arcs. %o A350751 (PARI) A350751seq(20) \\ See PARI link in A350489 for program code. %Y A350751 Column sums of A350750. %Y A350751 Cf. A350489, A350752. %K A350751 nonn %O A350751 0,6 %A A350751 _Andrew Howroyd_, Jan 14 2022