%I #4 Jan 25 2016 21:11:01
%S 12,2191,381958,70985206,12341773443,2135811945390,360625109847257,
%T 60269655478497862,9949083335191755757,1629156960066795552208,
%U 264820932563055654137153,42807217788424085785910968
%N Number of nX4 0..3 arrays with every repeated value in every row and column unequal to the previous repeated value, and new values introduced in row-major sequential order.
%C Column 4 of A268073.
%H R. H. Hardin, <a href="/A268071/b268071.txt">Table of n, a(n) for n = 1..43</a>
%e Some solutions for n=2
%e ..0..1..0..1....0..0..1..2....0..0..1..0....0..1..2..2....0..1..1..0
%e ..1..0..1..1....0..2..0..3....2..3..1..1....0..1..3..0....1..1..0..1
%Y Cf. A268073.
%K nonn
%O 1,1
%A _R. H. Hardin_, Jan 25 2016
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