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Number of (n+1)X(n+1) 0..3 arrays with every 2X2 subblock sum greater than 6
0

%I #5 Mar 31 2012 12:35:57

%S 106,30994,57181621,977644225220,125027563003468383,

%T 133077056896640920382417,1119067166994635331073741846565

%N Number of (n+1)X(n+1) 0..3 arrays with every 2X2 subblock sum greater than 6

%C Diagonal of A184217

%e Some solutions for 3X3

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_ Jan 10 2011