A200163 Number of -6..6 arrays x(0..n-1) of n elements with nonzero sum and with zero through n-1 differences all nonzero

12, 120, 1326, 13888, 145482, 1504820, 15586972, 160772064, 1658521710

Offset

1,1

Comments

Column 6 of A200165

Links

Table of n, a(n) for n=1..9.

Example

Some solutions for n=5
.-2....6...-1...-6...-2....2....4....4...-2....3....4....5....3....4....2....2
..5...-3....1...-2...-3...-4...-1...-4...-3...-3...-3....1....4...-6....1....5
.-4....2....4....4...-6...-6...-5....3...-5....1...-4....2...-6....5....4....1
.-2....3...-4...-5....4....6....4...-1...-3...-3...-2...-3...-1....2...-4....2
.-1....1...-1...-2...-5...-2...-6....3....6...-4...-6....6...-5...-6....4....4

Crossrefs

Sequence in context: A129064 A120585 A239188 * A012565 A012621 A102341

Adjacent sequences: A200160 A200161 A200162 * A200164 A200165 A200166

Keyword

nonn

Author

R. H. Hardin Nov 13 2011

Status

approved