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Half the number of (n+1)X5 0..2 arrays with no 2X2 subblock having sum 4
1

%I #5 Mar 31 2012 12:35:54

%S 10428,948164,84888699,7635071835,685721542209,61615880574766,

%T 5535599672278525,497350558783784298,44683911579501412754,

%U 4014608234358287116731,360689837976278213599877

%N Half the number of (n+1)X5 0..2 arrays with no 2X2 subblock having sum 4

%C Column 4 of A183792

%H R. H. Hardin, <a href="/A183787/b183787.txt">Table of n, a(n) for n = 1..200</a>

%e Some solutions for 3X5

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_ Jan 07 2011