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Number of nX4 binary arrays without the pattern 1 0 0 1 diagonally, vertically, antidiagonally or horizontally
1

%I #5 Mar 31 2012 12:36:15

%S 15,225,3375,36626,390721,3988168,42069350,442969881,4709354541,

%T 49857094654,528436125424,5591212296038,59196669906872,

%U 626540356943069,6633322246811551,70220475509151710,743409267344795743

%N Number of nX4 binary arrays without the pattern 1 0 0 1 diagonally, vertically, antidiagonally or horizontally

%C Column 4 of A189343

%H R. H. Hardin, <a href="/A189338/b189338.txt">Table of n, a(n) for n = 1..200</a>

%e Some solutions for 5X4

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

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

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_ Apr 20 2011