A268105 - OEIS

%I #4 Jan 26 2016 12:20:20

%S 4,81,4096,378225,56791296,12650850576,3926389806144,1621309443347169,

%T 859957083064464100,569966660957291549809,461690884178405990127504,

%U 448823671401604409584451856,515728792901852626366779599104

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

%C Row 2 of A268103.

%H R. H. Hardin, <a href="/A268105/b268105.txt">Table of n, a(n) for n = 1..26</a>

%e Some solutions for n=5

%e ..0..0..0..5..5....0..0..0..3..0....0..0..0..3..4....0..0..1..1..0

%e ..0..3..5..2..3....0..0..3..0..4....0..0..1..3..3....0..3..4..3..4

%Y Cf. A268103.

%K nonn

%O 1,1

%A _R. H. Hardin_, Jan 26 2016