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 A223064 Number of nX4 0..3 arrays with every row having the same least squares slope fit to a straight line, and every column the same least squares slope fit to a straight line, with a single point array taken as having zero slope 0
 256, 452, 6794, 19300, 480598, 1776550, 60959690, 244824466, 10179315678, 43975762290, 2130524532690, 9437282849494, 517417251582226 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Column 4 of A223066 LINKS Table of n, a(n) for n=1..13. EXAMPLE Some solutions for n=3 ..1..0..2..0....2..0..0..1....0..3..1..1....0..0..0..1....3..0..1..2 ..3..0..2..2....3..3..3..2....0..1..2..0....0..3..3..1....1..1..2..0 ..1..0..2..0....3..1..1..2....0..3..1..1....0..0..0..1....3..0..1..2 CROSSREFS Sequence in context: A299156 A221259 A223693 * A206206 A206199 A271811 Adjacent sequences: A223061 A223062 A223063 * A223065 A223066 A223067 KEYWORD nonn AUTHOR R. H. Hardin Mar 13 2013 STATUS approved

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Last modified May 21 02:29 EDT 2024. Contains 372720 sequences. (Running on oeis4.)