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 A223313 Number of nX4 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
 16, 57, 454, 1792, 10788, 43999, 226126, 874205, 4025000, 15472252, 66378320, 251166657, 1040520624, 3937703717, 16021122364, 60678306334, 245065674186, 932218789579, 3750451651646, 14310037237132, 57374909585066 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Column 4 of A223317 LINKS R. H. Hardin, Table of n, a(n) for n = 1..27 EXAMPLE Some solutions for n=4 ..1..1..0..1....1..0..1..0....0..0..0..0....1..1..0..0....0..0..1..0 ..0..1..1..0....0..1..0..0....0..0..0..1....1..1..0..0....0..0..1..0 ..1..0..0..1....0..0..1..0....0..1..1..1....0..1..1..1....0..0..1..0 ..0..1..0..1....0..0..1..1....0..0..0..1....0..0..0..1....0..0..1..1 CROSSREFS Sequence in context: A221068 A187277 A316443 * A235679 A235449 A235736 Adjacent sequences:  A223310 A223311 A223312 * A223314 A223315 A223316 KEYWORD nonn AUTHOR R. H. Hardin Mar 19 2013 STATUS approved

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Last modified July 26 01:49 EDT 2021. Contains 346294 sequences. (Running on oeis4.)