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A221778 Number of nX3 arrays of occupancy after each element stays put or moves to some horizontal, diagonal or antidiagonal neighbor, without move-in move-out left turns 1

%I

%S 8,258,7676,230621,6911480,207263892,6215606652,186396173357,

%T 5589718833790,167626605489419,5026850431347057,150747105072411113,

%U 4520661588144287366,135567321024902298286,4065444442439149946284

%N Number of nX3 arrays of occupancy after each element stays put or moves to some horizontal, diagonal or antidiagonal neighbor, without move-in move-out left turns

%C Column 3 of A221780

%H R. H. Hardin, <a href="/A221778/b221778.txt">Table of n, a(n) for n = 1..52</a>

%e Some solutions for n=3

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_ Jan 25 2013

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Last modified October 6 05:47 EDT 2022. Contains 357261 sequences. (Running on oeis4.)