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%I #4 Jan 24 2016 09:17:19
%S 2,14,187,3552,93311,3201247,137687080,7202412402,447845857496,
%T 32517659156620,2718146870737975,258534983638151774,
%U 27707842486101101991,3318064979477703022623,440767981147466114439164
%N Number of 2Xn 0..n arrays with every repeated value in every row and column equal to the previous repeated value, and new values introduced in row-major sequential order.
%C Row 2 of A268003.
%H R. H. Hardin, <a href="/A268005/b268005.txt">Table of n, a(n) for n = 1..26</a>
%e Some solutions for n=5
%e ..0..1..0..1..2....0..1..2..1..2....0..1..2..0..2....0..1..2..3..1
%e ..1..3..0..4..4....1..1..0..3..1....3..3..0..3..4....4..0..4..0..0
%Y Cf. A268003.
%K nonn
%O 1,1
%A _R. H. Hardin_, Jan 24 2016