login
The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A188329 Number of nondecreasing arrangements of n nonzero numbers in -(n+3)..(n+3) with sum zero 1
0, 5, 18, 94, 472, 2519, 13694, 76251, 431488, 2477726, 14399942, 84570550, 501197804, 2994043007, 18012040166, 109041492241, 663838548026, 4061954970953, 24969125105686, 154130498547414, 955070091156516 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Column 5 of A188333

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..24

EXAMPLE

Some solutions for n=6

.-7...-7...-6...-8...-8...-6...-9...-8...-8...-9...-8...-8...-7...-8...-9...-7

.-6...-5...-6...-3...-5...-6...-7...-6...-5...-6...-6...-8...-3...-8...-5...-3

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

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

..5....5....9....4....4....6....5....4....7....3....4....6....5....5....4....2

..5....8....9....7....9....9....7....7....9....8....5....6....7....7....4....5

CROSSREFS

Sequence in context: A097574 A113023 A174082 * A165962 A127756 A228614

Adjacent sequences:  A188326 A188327 A188328 * A188330 A188331 A188332

KEYWORD

nonn

AUTHOR

R. H. Hardin Mar 28 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 July 24 20:26 EDT 2021. Contains 346273 sequences. (Running on oeis4.)