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 A163028 #11 Jul 23 2023 22:22:47 %S A163028 1,7,144,9362,2075271,1642690309,4741764527414,50301538415794232, %T A163028 1966097907322824101263,283293243539676951470723543, %U A163028 150432229851691149674511947484546,294212923045987478712868787193615243838,2117957004814862762696618942898524645283531305 %N A163028 Number of n X n binary arrays with all 1s connected and a path of 1s from the top row to the bottom row. %H A163028 Andrew Howroyd, <a href="/A163028/b163028.txt">Table of n, a(n) for n = 1..15</a> %Y A163028 Main diagonal of A359574. %K A163028 nonn %O A163028 1,2 %A A163028 _R. H. Hardin_, Jul 20 2009 %E A163028 Terms a(8) and beyond from _Andrew Howroyd_, Jan 06 2023