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A223743 Number of nX1 0..2 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
3, 3, 9, 9, 39, 43, 195, 243, 1209, 1539, 8007, 10557, 56277, 75595, 409431, 558117, 3061119, 4218077, 23357223, 32466849, 181185495, 253624579, 1424453499, 2005655781, 11325017397, 16024596491, 90896159565, 129159081787 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Column 1 of A223747
LINKS
EXAMPLE
Some solutions for n=6
..2....0....1....1....2....0....2....2....1....0....2....0....1....1....1....0
..1....1....1....1....1....1....2....0....0....2....1....2....2....0....2....1
..0....2....0....2....0....2....0....1....2....2....1....1....1....2....2....1
..0....2....2....0....2....0....0....1....1....2....1....2....2....2....0....1
..1....1....2....0....2....0....2....0....2....2....1....0....0....0....1....1
..2....0....0....2....1....1....2....2....0....0....2....1....2....1....2....0
CROSSREFS
Sequence in context: A100066 A170832 A232281 * A117783 A121445 A327798
KEYWORD
nonn
AUTHOR
R. H. Hardin Mar 27 2013
STATUS
approved

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Last modified June 16 19:52 EDT 2024. Contains 373432 sequences. (Running on oeis4.)