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 A234057 Number of (3+2) X (n+2) 0..2 arrays with no increasing sequence of length 3 horizontally, diagonally downwards or antidiagonally downwards. 1

%I

%S 9780884,1539009351,244179417600,38905863275507,6195468706439527,

%T 986298836184525375,156985597510757236203,24986619253233455304754,

%U 3976912137839155800033872,632971207522246345463957145

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

%C Row 3 of A234054.

%H R. H. Hardin, <a href="/A234057/b234057.txt">Table of n, a(n) for n = 1..210</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..2....0..2..1....0..0..2....0..2..1....0..0..0....0..0..1....0..2..1

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_, Dec 19 2013

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Last modified November 29 10:05 EST 2020. Contains 338765 sequences. (Running on oeis4.)