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%I #6 Aug 12 2016 06:53:59
%S 2,22,152,1462,13772,139144,1431824,15086614,161254844,1745205892,
%T 19070813984,210091931944,2330150737904,25993622086384,
%U 291414635747552,3281265369826774,37087677409301804,420618333874721044
%N Number of 3Xn arrays containing n copies of 0..3-1 with no element plus any vertical neighbor equal to 3-1.
%C Row 3 of A265863.
%H R. H. Hardin, <a href="/A265864/b265864.txt">Table of n, a(n) for n = 1..95</a>
%e Some solutions for n=4
%e ..1..2..0..0....0..0..1..1....1..0..2..1....0..2..0..1....2..2..2..2
%e ..0..2..1..1....0..1..2..2....0..0..2..2....0..2..1..0....1..1..1..1
%e ..1..2..0..2....1..0..2..2....0..1..2..1....1..2..2..1....0..0..0..0
%Y Cf. A265863.
%K nonn
%O 1,1
%A _R. H. Hardin_, Dec 17 2015
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