A268023 - OEIS

%I #4 Jan 24 2016 14:08:24

%S 78,6084,295962,13530274,528293442,19177213020,642612340592,

%T 20358126145678,612589053437088,17674943525434667,491314996740768425,

%U 13223822255444331592,345845237074776797318,8816893125592668315273

%N Number of nX4 0..2 arrays with every repeated value in every row greater than or equal to, and in every column greater than, the previous repeated value.

%C Column 4 of A268026.

%H R. H. Hardin, <a href="/A268023/b268023.txt">Table of n, a(n) for n = 1..168</a>

%e Some solutions for n=2

%e ..2..1..0..0....1..0..2..2....2..0..0..1....2..0..1..1....0..0..2..2

%e ..1..0..2..0....2..1..1..1....2..1..0..2....0..0..2..1....1..2..0..1

%Y Cf. A268026.

%K nonn

%O 1,1

%A _R. H. Hardin_, Jan 24 2016