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%I #4 Oct 30 2013 20:31:49
%S 0,16,38,176,898,4350,22852,122740,661598,3593650,19572998,106801924,
%T 583264796,3186690816,17414382012,95176462582,520213927428,
%U 2843500943294,15543058517272,84962392690912,464431030442718,2538739709562252
%N Number of nX5 0..3 arrays x(i,j) with each element horizontally, vertically or antidiagonally next to at least one element with value (x(i,j)+1) mod 4 and at least one element with value (x(i,j)-1) mod 4, no adjacent elements equal, and upper left element zero
%C Column 5 of A230831
%H R. H. Hardin, <a href="/A230828/b230828.txt">Table of n, a(n) for n = 1..210</a>
%e Some solutions for n=4
%e ..0..1..3..1..0....0..3..0..3..0....0..3..2..0..2....0..3..2..0..1
%e ..3..2..0..2..3....1..2..1..2..1....1..0..1..3..1....1..0..1..3..2
%e ..0..1..3..1..0....0..3..0..3..2....2..3..2..0..3....2..3..2..1..0
%e ..3..2..0..2..3....2..1..2..0..1....0..1..3..1..2....1..0..3..2..3
%K nonn
%O 1,2
%A _R. H. Hardin_, Oct 30 2013
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