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Number of (n+1)X2 0..2 arrays with every row and column least squares fitting to a positive slope straight line
2

%I #5 Mar 07 2013 07:03:36

%S 1,3,16,48,185,534,1873,5397,17853,51516,165882,480321,1519997,

%T 4419336,13827716,40372992,125335640,367166796,1133563870,3330422526,

%U 10238553681,30154137624,92399944682,272682432123,833404227103,2463640724667

%N Number of (n+1)X2 0..2 arrays with every row and column least squares fitting to a positive slope straight line

%C Column 1 of A222847

%H R. H. Hardin, <a href="/A222843/b222843.txt">Table of n, a(n) for n = 1..46</a>

%e Some solutions for n=3

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

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

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

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

%K nonn

%O 1,2

%A _R. H. Hardin_ Mar 07 2013