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 A221237 Number of nX3 arrays of occupancy after each element moves to some horizontal, vertical or antidiagonal neighbor, without 2-loops 1

%I #4 Jan 06 2013 05:12:16

%S 0,53,1979,67710,2217402,71862107,2319920239,74798189113,

%T 2410533664375,77672428997113,2502628646064793,80633851221600834,

%U 2597977434265900778,83705168795842477962,2696924567819650577863,86893079359980110185109

%N Number of nX3 arrays of occupancy after each element moves to some horizontal, vertical or antidiagonal neighbor, without 2-loops

%C Column 3 of A221240

%H R. H. Hardin, <a href="/A221237/b221237.txt">Table of n, a(n) for n = 1..88</a>

%e Some solutions for n=3

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

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

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

%K nonn

%O 1,2

%A _R. H. Hardin_ Jan 06 2013

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Last modified September 24 22:14 EDT 2023. Contains 365582 sequences. (Running on oeis4.)