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Number of (n+1)X8 0..2 arrays with every 2X2 subblock having one or two distinct values, and new values 0..2 introduced in row major order
1

%I #5 Mar 31 2012 12:37:30

%S 181178,52089776,15846003427,4989831357191,1591829337311006,

%T 510927200467908535,164459337509857331548,53009059712073526189009,

%U 17097259777735866249288772,5516207267048868165666733764

%N Number of (n+1)X8 0..2 arrays with every 2X2 subblock having one or two distinct values, and new values 0..2 introduced in row major order

%C Column 7 of A209829

%H R. H. Hardin, <a href="/A209828/b209828.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=4

%e ..0..1..2..2..1..0..0..0....0..0..1..1..2..0..2..2....0..0..0..0..1..2..1..0

%e ..0..1..2..1..1..0..1..1....2..0..0..1..2..2..2..1....2..2..0..1..1..2..1..0

%e ..0..1..1..1..0..0..0..0....0..2..0..1..2..0..2..1....1..2..0..1..1..1..1..1

%e ..0..0..0..0..0..2..2..2....0..2..0..1..2..0..2..2....1..2..0..0..1..1..1..1

%e ..0..2..0..1..0..2..1..1....0..2..0..1..2..2..2..0....1..2..0..0..0..1..0..0

%K nonn

%O 1,1

%A _R. H. Hardin_ Mar 13 2012