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Number of nX3 0..3 arrays with no more than floor(nX3/2) elements equal to at least one king-move neighbor, with new values introduced in row major 0..3 order
1

%I #4 Feb 27 2013 16:51:56

%S 2,60,1229,61757,1073368,58834301,1009942505,57422493141,983799180734,

%T 57167497637058,980135963312917,57773208843439338,991883494877324788,

%U 59053106469546796413,1015334132464311393068,60895702441017443043820

%N Number of nX3 0..3 arrays with no more than floor(nX3/2) elements equal to at least one king-move neighbor, with new values introduced in row major 0..3 order

%C Column 3 of A222654

%H R. H. Hardin, <a href="/A222652/b222652.txt">Table of n, a(n) for n = 1..56</a>

%e Some solutions for n=3

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

%e ..1..1..1....3..3..1....2..0..3....2..2..3....0..3..0....2..1..3....3..0..0

%e ..2..3..0....0..2..0....3..0..1....3..1..1....3..2..1....1..0..2....1..0..2

%K nonn

%O 1,1

%A _R. H. Hardin_ Feb 27 2013