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 A268023 #4 Jan 24 2016 14:08:24 %S A268023 78,6084,295962,13530274,528293442,19177213020,642612340592, %T A268023 20358126145678,612589053437088,17674943525434667,491314996740768425, %U A268023 13223822255444331592,345845237074776797318,8816893125592668315273 %N A268023 Number of nX4 0..2 arrays with every repeated value in every row greater than or equal to, and in every column greater than, the previous repeated value. %C A268023 Column 4 of A268026. %H A268023 R. H. Hardin, <a href="/A268023/b268023.txt">Table of n, a(n) for n = 1..168</a> %e A268023 Some solutions for n=2 %e A268023 ..2..1..0..0....1..0..2..2....2..0..0..1....2..0..1..1....0..0..2..2 %e A268023 ..1..0..2..0....2..1..1..1....2..1..0..2....0..0..2..1....1..2..0..1 %Y A268023 Cf. A268026. %K A268023 nonn %O A268023 1,1 %A A268023 _R. H. Hardin_, Jan 24 2016