%I #4 Jan 26 2016 07:02:56
%S 26,2028,98830,4523326,176935858,6564461764,226972598646,
%T 7559736791208,242339515066412,7571750055421548,231096619789822498,
%U 6929454403612818710,204596614426899449914,5966371478586924122230,172147128731028332844244
%N Number of nX4 0..2 arrays with every repeated value in every row not one larger and in every column one larger mod 3 than the previous repeated value, and upper left element zero.
%C Column 4 of A268092.
%H R. H. Hardin, <a href="/A268089/b268089.txt">Table of n, a(n) for n = 1..159</a>
%e Some solutions for n=3
%e ..0..2..0..2....0..0..0..2....0..2..2..1....0..2..1..2....0..1..0..0
%e ..2..1..2..1....1..1..1..2....1..2..0..0....0..1..1..0....0..2..0..1
%e ..2..2..2..2....1..1..0..0....0..0..0..2....2..0..2..2....1..0..1..2
%Y Cf. A268092.
%K nonn
%O 1,1
%A _R. H. Hardin_, Jan 26 2016
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