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A233609 Number of (7+2)X(n+2) 0..2 arrays with no increasing sequence of length 3 horizontally, vertically or antidiagonally downwards 1

%I #4 Dec 14 2013 06:22:49

%S 1853608731449,14676155317362609,118131715113190354345,

%T 955374780755516442029392,7725532264282950863151651388,

%U 62458817783021082188658229035104,504952565127306851299571097075003261

%N Number of (7+2)X(n+2) 0..2 arrays with no increasing sequence of length 3 horizontally, vertically or antidiagonally downwards

%C Row 7 of A233602

%H R. H. Hardin, <a href="/A233609/b233609.txt">Table of n, a(n) for n = 1..12</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..0..0....0..0..0....0..0..0....0..0..0....0..0..0....0..0..0....0..0..0

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

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_, Dec 14 2013

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Last modified May 1 23:54 EDT 2024. Contains 372178 sequences. (Running on oeis4.)