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A200210
Number of -n..n arrays x(0..8) of 9 elements with zero sum and nonzero second and third differences
1
360, 63326, 1282168, 11315108, 62141592, 253625670, 838749476, 2371034404, 5950389676, 13585723472, 28694253866, 56870615234, 106810248534, 191533300498, 330111908464, 549616167606, 887398698638, 1394638491438
OFFSET
1,1
COMMENTS
Row 6 of A200204
LINKS
EXAMPLE
Some solutions for n=3
.-3...-2...-2...-3...-3...-1...-2...-3...-2...-2...-2...-2...-3...-3...-3...-3
.-3...-3...-3....0....1...-3...-3...-3...-3...-3...-3...-3....1....0....1....0
..3....0....3...-2...-2....1....3....2....1...-1....0....2...-2...-2...-2....0
..0....1....0....3...-1....2...-1....2....0....3....0....0....1....0....0....3
..3...-2...-1....0....3....1....1....3....2...-1...-1....3....3....3....3....0
..2....1....3....2...-3...-3....2....1....3....1....2...-1....1....1....2....3
.-2....1...-3....1....2....2...-2....1...-3...-1....2...-3....3...-2....0...-2
.-1....3....2...-2....0....2...-1....0....1....3....0....2...-2....0...-1....1
..1....1....1....1....3...-1....3...-3....1....1....2....2...-2....3....0...-2
CROSSREFS
Sequence in context: A299955 A166785 A265455 * A263509 A317796 A145412
KEYWORD
nonn
AUTHOR
R. H. Hardin Nov 14 2011
STATUS
approved