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A223074 T(n,k)=Number of nXk 0..2 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 3

%I #4 Mar 14 2013 09:50:50

%S 3,0,0,0,62,0,0,306,306,0,0,2888,7074,2888,0,0,17968,207216,207216,

%T 17968,0,0,139616,4047876,27452008,4047876,139616,0,0,928600,97159620,

%U 1828765016,1828765016,97159620,928600,0,0,6820956,1928081520

%N T(n,k)=Number of nXk 0..2 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 .3.......0..........0............0............0............0..............0

%C .0......62........306.........2888........17968.......139616.........928600

%C .0.....306.......7074.......207216......4047876.....97159620.....1928081520

%C .0....2888.....207216.....27452008...1828765016.170196118056.11838030123808

%C .0...17968....4047876...1828765016.346224860946

%C .0..139616...97159620.170196118056

%C .0..928600.1928081520

%C .0.6820956

%H R. H. Hardin, <a href="/A223074/b223074.txt">Table of n, a(n) for n = 1..49</a>

%e Some solutions for n=3 k=4

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

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

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

%K nonn,tabl

%O 1,1

%A _R. H. Hardin_ Mar 14 2013

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Last modified August 2 22:39 EDT 2024. Contains 374875 sequences. (Running on oeis4.)