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A222096 Number of 4Xn arrays of occupancy after each element stays put or moves to some horizontal, vertical or antidiagonal neighbor, without move-in move-out left turns 1

%I

%S 21,3034,439979,62776264,8938090933,1272224461900,181075284907525,

%T 25772100415484857,3668085288770478139,522070083851345084353,

%U 74305016748179915810183,10575659301127035698958882

%N Number of 4Xn arrays of occupancy after each element stays put or moves to some horizontal, vertical or antidiagonal neighbor, without move-in move-out left turns

%C Row 4 of A222093

%H R. H. Hardin, <a href="/A222096/b222096.txt">Table of n, a(n) for n = 1..27</a>

%e Some solutions for n=3

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

%e ..2..0..1....4..0..2....3..0..4....2..1..1....2..0..2....2..0..1....1..2..0

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_ Feb 07 2013

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Last modified August 12 10:16 EDT 2022. Contains 356069 sequences. (Running on oeis4.)