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%I #4 Jan 23 2016 10:04:08
%S 60,3600,216000,12067722,648144348,33600202086,1691726672094,
%T 83078866656672,3993019853352132,188338933978296900,
%U 8737015871231173194,399355062781386269430,18013039522804400997948,802791844156171633174662
%N Number of 3Xn 0..3 arrays with every repeated value in every row greater than or equal to, and in every column greater than, the previous repeated value.
%C Row 3 of A267974.
%H R. H. Hardin, <a href="/A267977/b267977.txt">Table of n, a(n) for n = 1..210</a>
%e Some solutions for n=2
%e ..1..0....1..2....0..3....1..1....3..2....1..0....3..0....3..2....2..0....3..1
%e ..0..2....2..2....1..1....3..2....3..2....3..3....1..3....2..2....0..1....3..0
%e ..3..2....1..0....3..3....0..2....1..3....0..0....0..0....3..3....0..3....2..3
%Y Cf. A267974.
%K nonn
%O 1,1
%A _R. H. Hardin_, Jan 23 2016
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