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Number of nX5 arrays of occupancy after each element stays put or moves to some horizontal, vertical or antidiagonal neighbor, without move-in move-out straight through or left turns
1

%I #4 Jan 30 2013 19:29:00

%S 28,19408,7235107,2815434576,1093046005330,424750933848720,

%T 164973176599593177,64079516472337724523,24889801648272710871176,

%U 9667694294893797006224411,3755123558818256978843191913

%N Number of nX5 arrays of occupancy after each element stays put or moves to some horizontal, vertical or antidiagonal neighbor, without move-in move-out straight through or left turns

%C Column 5 of A221898

%H R. H. Hardin, <a href="/A221897/b221897.txt">Table of n, a(n) for n = 1..16</a>

%e Some solutions for n=3

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_ Jan 30 2013