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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 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Row 6 of A200204

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..21

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

Adjacent sequences:  A200207 A200208 A200209 * A200211 A200212 A200213

KEYWORD

nonn

AUTHOR

R. H. Hardin Nov 14 2011

STATUS

approved

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Last modified October 20 10:00 EDT 2020. Contains 337900 sequences. (Running on oeis4.)