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Number of (n+2)X8 0..2 arrays with every 3X3 subblock having three equal elements in a row horizontally, vertically, diagonally or antidiagonally exactly two different ways, and new values 0..2 introduced in row major order
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%I #4 Mar 31 2012 12:37:03

%S 14289768,523821125,21551078590,691810208216,31154215435107

%N Number of (n+2)X8 0..2 arrays with every 3X3 subblock having three equal elements in a row horizontally, vertically, diagonally or antidiagonally exactly two different ways, and new values 0..2 introduced in row major order

%C Column 6 of A204954

%e Some solutions for n=3

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

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

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_ Jan 20 2012