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Number of nX4 0..1 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
0

%I #3 Mar 16 2013 06:29:17

%S 0,66,788,28690,327840,6576382,79156940,1344714010,16864279960,

%T 266464713662,3423259270244,52061640328402,679038371903176

%N Number of nX4 0..1 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 Column 4 of A223154

%e Some solutions for n=3

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

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

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

%K nonn

%O 1,2

%A _R. H. Hardin_ Mar 16 2013