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 A267910 #3 Jan 22 2016 07:59:14 %S A267910 77,35574,16435188,4817531571,1145682971200,235078226435316, %T A267910 43513012231778789,7469598819592006274,1211420059049034851314, %U A267910 188084661205864273984587 %N A267910 Number of nX6 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 A267910 Column 6 of A267911. %e A267910 Some solutions for n=2 %e A267910 ..0..1..2..1..1..0....0..0..1..1..2..1....0..1..1..0..2..1....0..1..0..1..2..0 %e A267910 ..2..1..1..2..0..0....1..1..2..1..0..0....1..1..0..0..2..2....2..2..0..2..0..0 %Y A267910 Cf. A267911. %K A267910 nonn %O A267910 1,1 %A A267910 _R. H. Hardin_, Jan 22 2016