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A223819
Number of nX1 0..3 arrays with every row and column least squares fitting to a zero slope straight line, with a single point array taken as having zero slope
2
4, 4, 16, 22, 112, 172, 1064, 1742, 11664, 19976, 138640, 243802, 1732272, 3104312, 22419608, 40745940, 297918608, 547354320, 4040882352, 7488584886, 55716851136, 103984450924, 778639744064, 1461701983398, 11004152490272, 20759785009832
OFFSET
1,1
COMMENTS
Column 1 of A223824
LINKS
EXAMPLE
Some solutions for n=4
..0....0....2....3....3....2....1....2....1....3....2....1....1....2....3....0
..0....3....2....1....0....0....0....1....2....3....3....0....1....0....2....3
..0....0....2....1....3....0....0....1....2....3....3....3....1....3....2....3
..0....1....2....3....2....2....1....2....1....3....2....0....1....1....3....0
CROSSREFS
Sequence in context: A137725 A240035 A321677 * A082649 A156232 A053441
KEYWORD
nonn
AUTHOR
R. H. Hardin Mar 27 2013
STATUS
approved