A209090 - OEIS

%I #5 Mar 31 2012 12:37:26

%S 3361,11296321,28698007940,71929610916133,180986678798076799,

%T 455585601029801268422,1146755797140484005008568,

%U 2886470185339791514614907107,7265468650533511013141969489769

%N Number of nX6 0..3 arrays avoiding the pattern z z+1 z horizontally and z z-1 z vertically

%C Column 6 of A209092

%H R. H. Hardin, <a href="/A209090/b209090.txt">Table of n, a(n) for n = 1..15</a>

%e Some solutions for n=4

%e ..3..2..2..3..1..1....1..0..0..0..0..3....2..0..0..1..1..2....2..2..1..0..0..3

%e ..2..1..1..2..2..3....1..2..2..0..1..3....2..0..1..3..2..0....0..0..1..1..1..3

%e ..2..3..1..0..0..1....1..3..3..1..1..3....0..0..0..1..1..1....3..3..2..0..0..2

%e ..1..1..1..2..2..3....0..1..1..0..1..1....3..3..3..2..3..0....1..1..3..2..0..0

%K nonn

%O 1,1

%A _R. H. Hardin_ Mar 05 2012