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Number of nX4 0..3 arrays with no element equal to the same number of vertical neighbors as horizontal neighbors, with new values 0..3 introduced in row major order
1

%I #4 Apr 19 2014 18:30:06

%S 2,22,415,10998,295782,8216943,229552661,6440926150,180941958872,

%T 5086440781934,143018442461614,4021763658647636,113099275164521657,

%U 3180615701360043164,89447028720676238703,2515486937762307225624

%N Number of nX4 0..3 arrays with no element equal to the same number of vertical neighbors as horizontal neighbors, with new values 0..3 introduced in row major order

%C Column 4 of A241349

%H R. H. Hardin, <a href="/A241347/b241347.txt">Table of n, a(n) for n = 1..193</a>

%e Some solutions for n=4

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

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_, Apr 19 2014