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A200164 Number of -7..7 arrays x(0..n-1) of n elements with nonzero sum and with zero through n-1 differences all nonzero 0
14, 168, 2180, 27160, 336992, 4141212, 50917674, 624074768 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 7 of A200165

LINKS

Table of n, a(n) for n=1..8.

EXAMPLE

Some solutions for n=5

.-3....4....1...-7...-3...-3...-3....1....1....1...-7....5...-7...-7...-4...-7

..2...-6...-7....6...-6...-4...-7...-1...-4....7....3....4....7...-5....4...-3

.-3...-2...-5...-3...-5....2....1...-7....3....4...-2...-3...-7....2...-7...-1

..6...-7....1...-1...-3...-4....3....6....2...-1....2....4...-4...-7...-1....6

..2...-1...-1...-7....4....7....4...-1...-6...-3...-7...-6....6...-6...-3...-7

CROSSREFS

Sequence in context: A125449 A159738 A062148 * A199529 A098299 A254811

Adjacent sequences:  A200161 A200162 A200163 * A200165 A200166 A200167

KEYWORD

nonn

AUTHOR

R. H. Hardin Nov 13 2011

STATUS

approved

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Last modified September 21 17:46 EDT 2019. Contains 327273 sequences. (Running on oeis4.)