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Number of nX6 0..3 arrays with no more than floor(nX6/2) elements unequal to at least one horizontal, vertical or antidiagonal neighbor, with new values introduced in row major 0..3 order
1

%I #4 Feb 26 2013 08:30:47

%S 14,149,3545,85511,2921905,118162369,5996281816,346754406852,

%T 21456580709691,1373306350646075,89477984746618739,

%U 5875770793367315401,386959176729149206835,25518458960278102529389,1684014920622795463665019

%N Number of nX6 0..3 arrays with no more than floor(nX6/2) elements unequal to at least one horizontal, vertical or antidiagonal neighbor, with new values introduced in row major 0..3 order

%C Column 6 of A222616

%H R. H. Hardin, <a href="/A222614/b222614.txt">Table of n, a(n) for n = 1..23</a>

%e Some solutions for n=3

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_ Feb 26 2013