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Number of nX1 0..2 arrays with every row and column least squares fitting to a nonnegative slope straight line, with a single point array taken as having zero slope
1

%I #5 Mar 12 2013 18:48:02

%S 3,6,18,45,141,386,1191,3402,10446,30294,92577,270999,825300,2429282,

%T 7379169,21802419,66100641,195819283,592809345,1759625625,5320769349,

%U 15817342094,47783816163,142217596131,429306813420,1278945212410

%N Number of nX1 0..2 arrays with every row and column least squares fitting to a nonnegative slope straight line, with a single point array taken as having zero slope

%C Column 1 of A223048

%H R. H. Hardin, <a href="/A223044/b223044.txt">Table of n, a(n) for n = 1..189</a>

%e Some solutions for n=3

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_ Mar 12 2013