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 A202888 #8 Jul 19 2023 09:40:09 %S A202888 292,701275,922352267,1137589582096,1452080571954205, %T A202888 1855037301620277541,2365289879500027706428,3016217753359820252116493, %U A202888 3846628606342304091797101743,4905606162973199116333144693744 %N A202888 Number of nX7 0..2 arrays with every nonzero element less than or equal to some horizontal or vertical neighbor. %H A202888 R. H. Hardin, <a href="/A202888/b202888.txt">Table of n, a(n) for n = 1..210</a> %e A202888 Some solutions for n=2 %e A202888 ..0..0..0..1..1..0..2....0..1..1..2..1..1..0....0..0..2..2..0..2..2 %e A202888 ..0..1..1..0..1..2..2....0..0..0..2..0..1..0....0..1..2..2..0..1..2 %Y A202888 Column 7 of A202889. %K A202888 nonn %O A202888 1,1 %A A202888 _R. H. Hardin_, Dec 25 2011