The OEIS is supported by the many generous donors to the OEIS Foundation.
%I #4 Jan 06 2013 05:13:08
%S 0,467,67710,8959341,1130617545,141336723259,17607272065860,
%T 2191088686237881,272559108705818889,33900194712220801503,
%U 4216208061863101762098,524365251673562024764232
%N Number of nX4 arrays of occupancy after each element moves to some horizontal, vertical or antidiagonal neighbor, without 2-loops
%C Column 4 of A221240
%H R. H. Hardin, <a href="/A221238/b221238.txt">Table of n, a(n) for n = 1..46</a>
%e Some solutions for n=3
%e ..0..1..0..0....0..0..0..0....0..3..1..2....0..1..0..2....0..2..0..1
%e ..0..3..0..3....2..3..0..1....1..1..0..0....2..1..1..1....1..1..4..0
%e ..2..1..1..1....2..2..1..1....2..1..1..0....1..1..2..0....0..1..2..0
%K nonn
%O 1,2
%A _R. H. Hardin_ Jan 06 2013