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 A241327 #6 Jul 23 2025 11:12:28 %S A241327 41,45057,60066019,79254376889,104609549355169,138095118530911728, %T A241327 182299462522915741748,240653648937251996398823, %U A241327 317687073439565072412214593,419378959685869736234929351013 %N A241327 Number of nX6 0..3 arrays with no element equal to fewer vertical neighbors than horizontal neighbors, with new values 0..3 introduced in row major order. %C A241327 Column 6 of A241328 %H A241327 R. H. Hardin, <a href="/A241327/b241327.txt">Table of n, a(n) for n = 1..33</a> %e A241327 Some solutions for n=2 %e A241327 ..0..1..2..0..1..2....0..1..0..2..0..2....0..1..2..3..2..0....0..1..0..1..1..0 %e A241327 ..2..0..3..0..3..2....1..3..1..3..0..2....0..3..1..2..0..2....2..1..3..1..1..3 %K A241327 nonn %O A241327 1,1 %A A241327 _R. H. Hardin_, Apr 19 2014