%I #4 Mar 10 2013 05:18:47

%S 4,0,0,0,212,0,0,2256,2256,0,0,36302,125664,36302,0,0,455904,8579208,

%T 8579208,455904,0,0,6471572,436075392,3084748094,436075392,6471572,0,

%U 0,84040156,25670781880,690124074740,690124074740,25670781880,84040156,0,0

%N T(n,k)=Number of nXk 0..3 arrays with no adjacent rows or columns having the same least squares slope fit to a straight line, with a single point array taken as having zero slope

%C Table starts

%C .4..........0.............0...............0...............0...............0

%C .0........212..........2256...........36302..........455904.........6471572

%C .0.......2256........125664.........8579208.......436075392.....25670781880

%C .0......36302.......8579208......3084748094....690124074740.194406198823968

%C .0.....455904.....436075392....690124074740.593420786763904

%C .0....6471572...25670781880.194406198823968

%C .0...84040156.1318401732192

%C .0.1156716696

%H R. H. Hardin, <a href="/A222953/b222953.txt">Table of n, a(n) for n = 1..49</a>

%e Some solutions for n=3 k=4

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

%e ..1..2..0..2....0..0..0..3....2..0..0..2....1..0..2..2....3..2..2..2

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

%K nonn,tabl

%O 1,1

%A _R. H. Hardin_ Mar 10 2013