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%I #4 Aug 12 2016 07:05:17
%S 0,2,152,30488,18437120,13734486480,21429982230720,40229528835726720,
%T 131323790370474455040
%N Number of nX3 arrays containing 3 copies of 0..n-1 with no element plus any horizontal neighbor equal to n-1.
%C Column 3 of A265882.
%e Some solutions for n=4
%e ..3..1..3....3..1..1....2..0..2....3..1..3....3..1..0....1..3..1....3..2..0
%e ..2..0..0....1..3..2....1..1..3....0..1..1....1..3..1....2..2..3....1..1..3
%e ..3..1..1....2..0..0....0..0..2....3..2..0....0..2..3....0..1..0....0..0..2
%e ..0..2..2....0..2..3....3..3..1....0..2..2....2..2..0....0..2..3....1..3..2
%Y Cf. A265882.
%K nonn
%O 1,2
%A _R. H. Hardin_, Dec 17 2015
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