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%I #4 Nov 23 2016 15:12:05
%S 0,0,395,16224,354696,6208804,94510277,1235465691,13780447802,
%T 132510394588,1117003717258,8394295309778,57076381840494,
%U 355509912080514,2049367954200226,11026586497658309,55766838990035825,266680636061199341
%N Number of nX2 0..3 arrays with rows and columns in lexicographic nondecreasing order but with exactly three mistakes.
%C Column 2 of A278610.
%H R. H. Hardin, <a href="/A278605/b278605.txt">Table of n, a(n) for n = 1..210</a>
%H R. H. Hardin, <a href="/A278605/a278605.txt">Empirical polynomial of degree 63</a>
%F Empirical polynomial of degree 63 (see link above)
%e Some solutions for n=4
%e ..3..3. .3..2. .2..0. .3..1. .3..2. .3..2. .2..0. .2..1. .3..1. .3..3
%e ..2..1. .0..0. .0..0. .0..3. .1..2. .2..3. .1..3. .1..0. .2..1. .0..0
%e ..3..1. .2..0. .3..3. .0..2. .2..3. .1..3. .1..2. .0..1. .0..3. .3..3
%e ..0..1. .0..3. .0..3. .0..3. .0..1. .2..3. .3..3. .3..3. .3..3. .3..0
%Y Cf. A278610.
%K nonn
%O 1,3
%A _R. H. Hardin_, Nov 23 2016
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