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A234056 Number of (2+2)X(n+2) 0..2 arrays with no increasing sequence of length 3 horizontally, diagonally downwards or antidiagonally downwards 1

%I

%S 402000,23857470,1425517650,85374621482,5109216554257,305711881527997,

%T 18290072795884688,1094247314313409438,65465147970699360649,

%U 3916554430848201277811,234313581827486451826841

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

%C Row 2 of A234054

%H R. H. Hardin, <a href="/A234056/b234056.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=1

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

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_, Dec 19 2013

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Last modified October 30 22:57 EDT 2020. Contains 338095 sequences. (Running on oeis4.)