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A183478 Number of nX4 0..2 arrays with every element equal to either the sum mod 3 of its vertical neighbors or the sum mod 3 of its horizontal neighbors 1

%I

%S 7,135,587,4015,40073,270549,1942323,15984991,119888365,894632985,

%T 6977123487,53362780811,405255680609,3117495042837,23903072796727,

%U 182681815961381,1400954811635395,10740879929227211,82253911392409687

%N Number of nX4 0..2 arrays with every element equal to either the sum mod 3 of its vertical neighbors or the sum mod 3 of its horizontal neighbors

%C Column 4 of A183483

%H R. H. Hardin, <a href="/A183478/b183478.txt">Table of n, a(n) for n = 1..200</a>

%e Some solutions for 6X4

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

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

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

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_ Jan 05 2011

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Last modified October 25 06:30 EDT 2021. Contains 348239 sequences. (Running on oeis4.)