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A203387 Number of nX6 0..6 arrays with every nonzero element less than or equal to at least two horizontal and vertical neighbors 0

%I

%S 1,11585,50848495,87523201775,133980449920831

%N Number of nX6 0..6 arrays with every nonzero element less than or equal to at least two horizontal and vertical neighbors

%C Column 6 of A203389

%e Some solutions for n=4

%e ..5..6..6..5..5..3....2..2..5..5..3..1....3..3..3..6..6..1....6..6..4..0..4..4

%e ..5..6..6..1..5..3....2..0..5..5..6..6....6..6..5..6..6..3....6..6..6..0..5..5

%e ..2..3..4..0..5..5....5..5..1..6..6..6....6..6..2..6..6..3....4..6..6..1..5..5

%e ..0..0..4..4..5..5....5..5..1..6..6..0....3..3..0..4..4..0....0..5..5..0..3..3

%K nonn

%O 1,2

%A _R. H. Hardin_ Jan 01 2012

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Last modified June 19 19:50 EDT 2013. Contains 226416 sequences.