A206064 - OEIS

%I #6 Mar 31 2012 12:37:09

%S 81,606,27654,2991276,759076386,452464863480,635039160433908,

%T 2102329455182593428,16435908654641541759006,

%U 303684609739411084385625516,13268777833680838626236831257044,1371504097617322102693152060065678520

%N Number of (n+1)X(n+1) 0..2 arrays with every 2X3 or 3X2 subblock having exactly three clockwise edge increases

%C Diagonal of A206072

%H R. H. Hardin, <a href="/A206064/b206064.txt">Table of n, a(n) for n = 1..13</a>

%e Some solutions for n=4

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

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

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_ Feb 03 2012