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%I #7 Apr 19 2021 17:04:56
%S 596653,1747075,5273797,17048731,67476109,275808307,1180360357,
%T 5652251635,27729452461,140207992699,758880838813,4181652023251,
%U 23526377578933,138205654308355,822362988368317,4963895328442891
%N Number of (n+2) X 6 0..2 arrays with each 3 X 3 subblock having a sum of 9.
%C Column 4 of A187645.
%H R. H. Hardin, <a href="/A187643/b187643.txt">Table of n, a(n) for n = 1..23</a>
%e Some solutions for 4 X 6
%e ..0..1..1..0..0..2....0..2..0..0..2..0....0..1..2..0..0..2....0..2..1..1..2..0
%e ..0..1..1..1..2..2....0..1..1..2..2..2....0..0..1..1..2..1....0..1..2..0..1..2
%e ..2..1..2..1..1..0....2..1..2..0..0..1....2..1..2..1..0..2....1..2..0..0..2..1
%e ..0..1..1..0..0..2....1..0..1..1..0..1....2..1..0..2..0..0....1..0..2..2..0..1
%Y Cf. A187645.
%K nonn
%O 1,1
%A _R. H. Hardin_ Mar 12 2011
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