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%I #7 May 03 2021 15:01:42
%S 578832,16360280,468071656,14036056356,454513218192,14787300483772,
%T 487561661150044,16472150536557064,557389824509298392,
%U 18948884362536727766,650214578145168937032,22324403465508068603572
%N Half the number of (n+2) X 4 0..3 arrays with each 3 X 3 subblock having sum 13 or 14.
%C Column 2 of A187376.
%H R. H. Hardin, <a href="/A187374/b187374.txt">Table of n, a(n) for n = 1..140</a>
%e Some solutions for 6 X 4
%e ..0..0..0..0....0..0..0..0....0..0..0..2....0..0..0..2....0..0..0..2
%e ..2..2..2..3....2..2..2..2....2..2..2..0....2..2..2..3....2..2..2..0
%e ..2..2..3..1....3..2..2..3....3..2..3..2....2..2..3..0....3..2..2..3
%e ..1..0..0..1....0..0..0..1....0..0..0..3....0..0..1..0....0..0..1..2
%e ..0..3..2..2....1..3..2..1....2..2..2..0....2..1..3..3....2..0..3..1
%e ..3..2..3..1....2..2..3..2....3..3..2..2....1..2..3..1....2..3..3..0
%Y Cf. A187376.
%K nonn
%O 1,1
%A _R. H. Hardin_ Mar 09 2011
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