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 A196705 #9 Sep 05 2025 14:14:02 %S A196705 22,1744,55436,2264381,88057485,3444722540,134682461126,5269250186071, %T A196705 206166859931473,8065792226445503,315546555294232838, %U A196705 12344751415733916603,482952689817901349673,18894135165739360648424 %N A196705 Number of n X 6 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 3,1,0,4,2 for x=0,1,2,3,4. %C A196705 Every 0 is next to 0 3's, every 1 is next to 1 1's, every 2 is next to 2 0's, every 3 is next to 3 4's, every 4 is next to 4 2's. %C A196705 Column 6 of A196707. %H A196705 R. H. Hardin, <a href="/A196705/b196705.txt">Table of n, a(n) for n = 1..191</a> %e A196705 Some solutions for n=4 %e A196705 ..0..0..0..1..0..0....0..0..0..2..0..0....0..0..0..0..0..1....0..0..2..1..1..0 %e A196705 ..0..0..0..1..2..2....0..0..0..2..0..0....0..0..0..0..0..1....0..0..0..0..0..0 %e A196705 ..0..2..2..2..0..0....2..1..1..2..0..2....0..0..0..0..0..0....0..0..0..1..1..0 %e A196705 ..0..2..0..0..0..0....0..0..0..0..1..1....0..2..2..0..1..1....0..1..1..0..2..0 %Y A196705 Cf. A196707. %K A196705 nonn,changed %O A196705 1,1 %A A196705 _R. H. Hardin_, Oct 05 2011