login
The OEIS is supported by the many generous donors to the OEIS Foundation.

 

Logo

Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 59th year, we have over 358,000 sequences, and we’ve crossed 10,300 citations (which often say “discovered thanks to the OEIS”).

Other ways to Give
Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A188180 Number of strictly increasing arrangements of n numbers in -(n+6)..(n+6) with sum zero 1
1, 8, 41, 207, 967, 4370, 19138, 81805, 343363, 1421530, 5820904, 23626234, 95220378, 381577586, 1521967986, 6047272980, 23951790860, 94618944122, 372969633775, 1467518524851, 5765549295661, 22623246705372, 88678543148354 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Column 8 of A188181

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..25

EXAMPLE

Some solutions for n=5

.-5...-7...-6...-9..-11...-8...-9...-8...-9..-10...-6..-10...-6...-8...-6...-8

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

.-1...-3....1....0...-1....4....2...-2...-5....0...-2....2...-2....0....0....0

..3....5....3....6....7....5....3....7....9....6....3....4....4....4....1....1

..5...11....5....8....8....6....6...10...11...11...10....8....8...11....6....8

CROSSREFS

Sequence in context: A273176 A080840 A199846 * A026968 A026978 A037577

Adjacent sequences: A188177 A188178 A188179 * A188181 A188182 A188183

KEYWORD

nonn

AUTHOR

R. H. Hardin Mar 23 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 | Recents
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified December 1 22:12 EST 2022. Contains 358484 sequences. (Running on oeis4.)