login
Number of (n+1)X(4+1) 0..2 arrays with no element equal to all horizontal neighbors or unequal to all vertical neighbors, and new values 0..2 introduced in row major order
1

%I #4 Mar 21 2014 07:08:55

%S 16,16,1536,11108,293741,3785280,71388971,1093269814,18727824939,

%T 301846514891,5028043624263,82269916141918,1359237851307197,

%U 22338985313123955,368190066381319758,6059086220408776630

%N Number of (n+1)X(4+1) 0..2 arrays with no element equal to all horizontal neighbors or unequal to all vertical neighbors, and new values 0..2 introduced in row major order

%C Column 4 of A239537

%H R. H. Hardin, <a href="/A239533/b239533.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=5

%e ..0..1..0..2..0....0..1..0..1..2....0..1..0..0..2....0..1..0..1..2

%e ..0..1..0..2..0....0..1..0..1..2....0..1..0..0..2....0..1..0..1..2

%e ..0..1..0..1..0....1..2..0..1..2....0..2..1..1..2....1..2..0..1..2

%e ..0..2..1..1..0....1..2..0..1..0....0..2..1..1..2....1..2..0..1..2

%e ..1..2..1..1..0....1..0..1..2..0....2..0..2..2..1....0..1..0..1..0

%e ..1..2..1..1..0....1..0..1..2..0....2..0..2..2..1....0..1..0..1..0

%K nonn

%O 1,1

%A _R. H. Hardin_, Mar 21 2014