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 A163044 #5 Jul 22 2025 06:58:57 %S A163044 1,3363,2413346,963186740,309080891641,90870669971589 %N A163044 Number of nX9 binary arrays with all 1s connected and a path of 1s from left column to right column. %K A163044 nonn %O A163044 1,2 %A A163044 _R. H. Hardin_ Jul 20 2009