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Number of (6+1)X(n+1) 0..3 arrays with no 2X2 subblock having x11-x00 less than x10-x01
1

%I #4 Dec 09 2014 07:43:39

%S 27278035,12140516092,2255553135793,224175608341756,13902663302194715,

%T 596244004665414586,19010586449609604592,475164885888410556180,

%U 9691434735916414155212,166393734233809655597676

%N Number of (6+1)X(n+1) 0..3 arrays with no 2X2 subblock having x11-x00 less than x10-x01

%C Row 6 of A251801

%H R. H. Hardin, <a href="/A251806/b251806.txt">Table of n, a(n) for n = 1..35</a>

%e Some solutions for n=1

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

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

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

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

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_, Dec 09 2014