A206859 - OEIS

%I #5 Mar 31 2012 12:37:14

%S 69,4761,192575,7598355,314918295,13093461017,541018725304,

%T 22336434688428,923097673638406,38158725414249736,1577142038208976046,

%U 65180147142970134040,2693823565225042593429,111334863067931222656792

%N Number of nX4 0..2 arrays avoiding the pattern z z+1 z in any row, column, diagonal or antidiagonal

%C Column 4 of A206863

%H R. H. Hardin, <a href="/A206859/b206859.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=4

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

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_ Feb 13 2012