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%I #3 Oct 30 2013 12:30:31
%S 0,154,1546,183088,6832578,485186602,25669880656,1576356652138,
%T 90342705475634,5358270247598784,312733245050099786
%N Number of nX6 0..3 arrays x(i,j) with each element horizontally or vertically 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, and upper left element zero
%C Column 6 of A230805
%e Some solutions for n=4
%e ..0..1..0..0..3..0....0..3..0..3..0..1....0..3..0..3..0..3....0..3..0..1..0..3
%e ..3..2..3..1..2..1....1..2..1..2..1..2....1..2..1..2..1..2....1..2..3..2..1..2
%e ..0..1..2..1..3..2....2..3..2..3..0..3....2..1..1..2..3..0....3..2..0..1..3..0
%e ..3..2..3..0..0..1....3..0..1..2..1..2....3..0..0..3..2..1....0..1..0..3..2..1
%K nonn
%O 1,2
%A _R. H. Hardin_, Oct 30 2013
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