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Number of nX3 0..1 arrays with successive rows and columns fitting to straight lines with nondecreasing slope, with a single point array taken as having zero slope
1

%I #5 Mar 19 2013 10:19:47

%S 8,26,136,454,2096,7490,32536,118190,495984,1829612,7534896,28093022,

%T 114631272,431107760,1749879648,6626934528,26812323712,102112441820,

%U 412247828720,1577225857288,6357677720504,24416496168472,98306183091960

%N Number of nX3 0..1 arrays with successive rows and columns fitting to straight lines with nondecreasing slope, with a single point array taken as having zero slope

%C Column 3 of A223317

%H R. H. Hardin, <a href="/A223312/b223312.txt">Table of n, a(n) for n = 1..55</a>

%e Some solutions for n=4

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

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_ Mar 19 2013