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 A354407 #7 Jul 18 2022 19:15:41 %S A354407 8,187,5416,173548,5891664,207606612,7508286664 %N A354407 Number of fixed pseudo-polyarcs with n cells. %Y A354407 Cf. A354382, A057787, A349101. %K A354407 nonn,hard,more %O A354407 1,1 %A A354407 _Aaron N. Siegel_, May 25 2022