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%I #5 Mar 31 2012 12:37:33
%S 4266246,7657326365,13436313660615,23591932615876019,
%T 41416867662718913763,72710583058655511309563,
%U 127648944948853198818703027,224097463695162713946579883851
%N Number of (n+1)X8 0..3 arrays containing all values 0..3 with every 2X2 subblock having one or three distinct values, and new values 0..3 introduced in row major order
%C Column 7 of A210309
%H R. H. Hardin, <a href="/A210308/b210308.txt">Table of n, a(n) for n = 1..171</a>
%e Some solutions for n=4
%e ..0..0..0..1..2..3..2..0....0..0..1..2..0..3..3..0....0..0..0..0..0..0..1..2
%e ..1..2..1..2..3..0..2..1....1..2..1..3..2..2..0..1....1..2..1..3..1..3..3..1
%e ..3..3..1..3..0..2..3..1....1..0..0..3..1..3..0..2....1..3..1..2..1..0..1..0
%e ..2..0..0..1..0..3..0..0....3..1..3..1..2..1..1..0....0..1..2..3..3..0..3..1
%e ..1..0..0..2..0..1..0..0....2..3..2..3..2..3..2..1....1..3..2..1..2..2..0..3
%K nonn
%O 1,1
%A _R. H. Hardin_ Mar 19 2012