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Agreement numbers: number of nX3 arrays of the count of horizontal and vertical neighbors equal to the corresponding element in a random 0..2 nX3 array
0

%I #4 Dec 21 2012 17:06:00

%S 4,66,1165,20578,363260,6413473,113229500,1999059559,35293275842

%N Agreement numbers: number of nX3 arrays of the count of horizontal and vertical neighbors equal to the corresponding element in a random 0..2 nX3 array

%C Column 3 of A220800

%e Some solutions for n=3

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_ Dec 21 2012