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 A285149 #11 Aug 24 2025 09:44:40 %S A285149 6,210,5773,159060,4551741,133021570,3943470769,118107656722, %T A285149 3565079136422,108275389928358,3304826405091975,101285844489502404, %U A285149 3114902710241515255,96075818781510092444,2970858080098454495490,92067497140321063171414,2858719791977116301069177 %N A285149 Number of n X 5 0..1 arrays with the number of 1's horizontally or antidiagonally adjacent to some 0 one less than the number of 0's adjacent to some 1. %H A285149 R. H. Hardin, <a href="/A285149/b285149.txt">Table of n, a(n) for n = 1..210</a> %e A285149 Some solutions for n=4 %e A285149 ..1..0..1..1..1. .0..1..0..0..1. .0..1..1..0..0. .0..0..0..0..1 %e A285149 ..0..0..0..1..1. .1..1..0..0..1. .0..0..1..1..0. .1..0..0..0..1 %e A285149 ..0..1..0..0..1. .0..1..0..1..0. .0..1..1..1..0. .0..0..1..0..0 %e A285149 ..0..0..0..1..0. .1..0..1..1..0. .1..0..1..0..0. .0..1..1..1..1 %Y A285149 Column 5 of A285152. %K A285149 nonn,changed %O A285149 1,1 %A A285149 _R. H. Hardin_, Apr 12 2017