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Number of (n+2)X9 binary arrays with no 3X3 subblock commuting with any horizontal or vertical neighbor 3X3 subblock
0

%I #4 Mar 31 2012 12:36:06

%S 117671951,47657171957,19839195220290,8263791225579948,

%T 3439855711337907764

%N Number of (n+2)X9 binary arrays with no 3X3 subblock commuting with any horizontal or vertical neighbor 3X3 subblock

%C Column 7 of A186806

%e Some solutions for 4X9

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

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_ Feb 26 2011