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Number of (n+1)X8 0..2 arrays with rows and columns of determinants of all 2X2 subblocks lexicographically nondecreasing
0

%I #4 Mar 31 2012 12:37:10

%S 588254,499752207,131428029860,77008927829374,46954627739500046,

%T 33632275642926148580

%N Number of (n+1)X8 0..2 arrays with rows and columns of determinants of all 2X2 subblocks lexicographically nondecreasing

%C Column 7 of A206223

%e Some solutions for n=4

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

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

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_ Feb 04 2012