login
This site is supported by donations to The OEIS Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
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 0
12, 120, 1326, 13888, 145482, 1504820, 15586972, 160772064, 1658521710 (list; graph; refs; listen; history; text; internal format)
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

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified October 19 21:28 EDT 2019. Contains 328244 sequences. (Running on oeis4.)