A207357 - OEIS

%I #5 Mar 31 2012 12:37:17

%S 1440,2073600,1799496100,1498532240063,1235754047831188,

%T 1017721314783737845,839863084228054288788,693341331552502948137170,

%U 572549877099724874489706731,472826386920542459653829610429

%N Number of nX7 0..2 arrays avoiding the pattern z+1 z+1 z horizontally and z-1 z-1 z vertically

%C Column 7 of A207358

%H R. H. Hardin, <a href="/A207357/b207357.txt">Table of n, a(n) for n = 1..30</a>

%e Some solutions for n=4

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

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_ Feb 17 2012