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%I #4 Nov 30 2016 07:52:47
%S 728,7709668,27351484380,69420349158080,143827898685401892,
%T 255381654976413401664,398752554782396916414790,
%U 556345120757052440184428640,701731665791093785660064537242
%N Number of nX6 0..3 arrays with rows in nondecreasing lexicographic order and columns in nonincreasing lexicographic order, but with exactly three mistakes.
%C Column 6 of A278896.
%H R. H. Hardin, <a href="/A278894/b278894.txt">Table of n, a(n) for n = 1..19</a>
%e Some solutions for n=1
%e ..1..2..3..2..0..1. .1..2..3..0..3..1. .0..1..0..1..2..1. .2..3..2..0..1..2
%Y Cf. A278896.
%K nonn
%O 1,1
%A _R. H. Hardin_, Nov 30 2016
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