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A222652 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.

%I A222652 #6 Jul 23 2025 02:52:29
%S A222652 2,60,1229,61757,1073368,58834301,1009942505,57422493141,983799180734,
%T A222652 57167497637058,980135963312917,57773208843439338,991883494877324788,
%U A222652 59053106469546796413,1015334132464311393068,60895702441017443043820
%N A222652 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 A222652 Column 3 of A222654
%H A222652 R. H. Hardin, <a href="/A222652/b222652.txt">Table of n, a(n) for n = 1..56</a>
%e A222652 Some solutions for n=3
%e A222652 ..0..1..0....0..1..2....0..1..2....0..1..0....0..1..2....0..1..0....0..1..2
%e A222652 ..1..1..1....3..3..1....2..0..3....2..2..3....0..3..0....2..1..3....3..0..0
%e A222652 ..2..3..0....0..2..0....3..0..1....3..1..1....3..2..1....1..0..2....1..0..2
%K A222652 nonn
%O A222652 1,1
%A A222652 _R. H. Hardin_ Feb 27 2013