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A233492 Number of (n+2) X (3+2) 0..2 arrays with no increasing sequence of length 3 horizontally or antidiagonally downwards. 1

%I

%S 8946936,1709348346,325881917874,62127117326151,11844001767009636,

%T 2257956973020836034,430460043429459971151,82063498573383090200622,

%U 15644698967819692026084375,2982527068033093478348100960

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

%C Column 3 of A233497.

%H R. H. Hardin, <a href="/A233492/b233492.txt">Table of n, a(n) for n = 1..210</a>

%F Empirical: a(n) = 191*a(n-1) +134*a(n-2) -38637*a(n-3) +3177*a(n-4) +1502613*a(n-5) -3705102*a(n-6) +2380185*a(n-7).

%e Some solutions for n=1

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

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

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

%Y Cf. A233497.

%K nonn

%O 1,1

%A _R. H. Hardin_, Dec 11 2013

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Last modified June 27 19:31 EDT 2022. Contains 354898 sequences. (Running on oeis4.)