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 A267917 #3 Jan 22 2016 08:05:07 %S A267917 88,45938,12017350,3774659262,922017784240,235078226435316, %T A267917 54141843502625776,12518028308236272012,2766574072615661515144 %N A267917 Number of 6Xn 0..2 arrays with every repeated value in every row unequal to the previous repeated value, and in every column equal to the previous repeated value, and new values introduced in row-major sequential order. %C A267917 Row 6 of A267911. %e A267917 Some solutions for n=2 %e A267917 ..0..1....0..1....0..0....0..0....0..1....0..1....0..1....0..0....0..1....0..1 %e A267917 ..1..1....2..0....1..2....1..1....1..1....0..0....1..2....1..1....2..2....2..0 %e A267917 ..0..0....2..2....2..0....0..1....1..2....0..0....0..0....0..2....0..0....1..0 %e A267917 ..1..2....2..1....1..1....2..1....0..1....1..1....0..2....2..1....2..2....1..1 %e A267917 ..2..1....1..0....1..0....2..2....2..1....0..0....1..1....0..0....2..2....2..2 %e A267917 ..2..0....0..0....1..2....0..0....0..0....0..0....0..1....0..1....1..0....0..0 %Y A267917 Cf. A267911. %K A267917 nonn %O A267917 1,1 %A A267917 _R. H. Hardin_, Jan 22 2016