A232301 - OEIS

%I #4 Nov 22 2013 07:26:16

%S 1,40867,43963319,30690409685,24797475083765,20843967523877175,

%T 17291702408190208843,14309005468246109828087,

%U 11852395942038473338742213,9819088600464792990304624339,8134045894315455725212916395019

%N Number of 7Xn 0..2 arrays with every 0 next to a 1 and every 1 next to a 2 horizontally or antidiagonally

%C Row 7 of A232295

%H R. H. Hardin, <a href="/A232301/b232301.txt">Table of n, a(n) for n = 1..77</a>

%e Some solutions for n=2

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

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

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

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

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

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

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

%K nonn

%O 1,2

%A _R. H. Hardin_, Nov 22 2013