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Number of (6+2)X(n+2) 0..2 arrays with no increasing sequence of length 3 horizontally or diagonally downwards
1

%I #6 Dec 25 2013 10:05:14

%S 90202925160,290807719744802,955881551862891819,

%T 3160465819880176888222,10447885769285657943599812,

%U 34526335226027559659871647183,114093615616643028027744872931828,377033181043858375482709232096984175

%N Number of (6+2)X(n+2) 0..2 arrays with no increasing sequence of length 3 horizontally or diagonally downwards

%C Row 6 of A234380

%H R. H. Hardin, <a href="/A234386/b234386.txt">Table of n, a(n) for n = 1..13</a>

%e Some.solutions.for.n=1

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

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

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

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

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

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_, Dec 25 2013