A200530 - OEIS

%I #5 Mar 31 2012 12:36:39

%S 19,146,905,4848,23925,111085,494555,2132979,8981773,37125420,

%T 151253915,609247412,2432002859,9638730963,37983584772,149003379789,

%U 582403346152,2269881052166,8826625108206,34261690527204,132805131519232

%N Number of nX4 0..2 arrays with every row and column running average nondecreasing rightwards and downwards

%C Column 4 of A200534

%H R. H. Hardin, <a href="/A200530/b200530.txt">Table of n, a(n) for n = 1..57</a>

%e Some solutions for n=5

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

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

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_ Nov 18 2011