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A200558 Number of -n..n arrays x(0..7) of 8 elements with zero sum and nonzero second differences 1
362, 21626, 266812, 1689732, 7286542, 24378976, 68263780, 167521092, 371147726, 758120242, 1449515972, 2623194882, 4532144132, 7526204850, 12076969112, 18807807576, 28527996642, 42270457652, 61336410730, 87344689150 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Row 6 of A200553

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..58

EXAMPLE

Some solutions for n=3

.-3....0....0...-3....1....1....1....1....0....0...-3...-3....1....1....1....0

..3....1....0....3...-3....0...-3....1...-2....1....2....1....0...-2...-1...-2

..0....3....3...-3....1....1...-1....0...-1....1...-3....0...-3...-2....0....1

..2...-3...-2....2...-1...-2...-1...-2...-3....3...-1....2...-2....3....0...-2

..2....2....1...-2....3....3....0...-2....1...-2....2....1....2....3....2....2

.-2...-3...-2...-2...-1...-3....3...-1....2....0....0....1...-3...-3....3....1

..0....2...-1....2....1....2....1....2....0...-3....3...-1....2....2...-3...-1

.-2...-2....1....3...-1...-2....0....1....3....0....0...-1....3...-2...-2....1

CROSSREFS

Sequence in context: A155019 A020539 A157442 * A212324 A007565 A098253

Adjacent sequences:  A200555 A200556 A200557 * A200559 A200560 A200561

KEYWORD

nonn

AUTHOR

R. H. Hardin Nov 19 2011

STATUS

approved

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Last modified March 22 17:25 EDT 2019. Contains 321422 sequences. (Running on oeis4.)