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%I #3 Jan 29 2016 07:25:00
%S 6,576,216000,197555340,371713931400,1257212773492866,
%T 6967515866907769668,59102884914387317492904,
%U 728462977173724674571341120,12523133152298313854607312469836
%N Number of 3Xn 0..n arrays with every repeated value in every row greater than or equal to, and every column greater than, the previous repeated value.
%C Row 3 of A268246.
%e Some solutions for n=2
%e ..2..1....2..1....2..0....1..2....2..0....1..0....0..0....2..0....0..0....1..0
%e ..0..0....1..1....1..1....0..2....1..0....2..1....1..2....2..1....2..2....0..1
%e ..1..1....0..2....2..2....0..1....2..1....0..1....2..2....0..1....0..0....0..0
%Y Cf. A268246.
%K nonn
%O 1,1
%A _R. H. Hardin_, Jan 29 2016