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

 

Logo
Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A188205 Number of nondecreasing arrangements of n numbers in -(n+1)..(n+1) with sum zero 1
1, 4, 13, 55, 252, 1242, 6375, 33885, 184717, 1028172, 5820904, 33427622, 194299052, 1141190188, 6763576681, 40405993509, 243090678343, 1471673620504, 8959718123381, 54824825183377, 337018924981048, 2080401423880834 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,2
COMMENTS
Column 3 of A188211
LINKS
EXAMPLE
Some solutions for n=4
.-3...-4...-2...-5...-5...-5...-2...-5...-3...-4...-5...-4...-5...-3...-5...-5
.-2...-4...-2...-3....0....0...-2...-5...-2....0....1....1....0....1...-1...-2
..2....4....2....3....2....0....1....5....1....0....1....1....1....1....1....3
..3....4....2....5....3....5....3....5....4....4....3....2....4....1....5....4
CROSSREFS
Sequence in context: A149472 A149473 A365854 * A149474 A149475 A149476
KEYWORD
nonn
AUTHOR
R. H. Hardin Mar 24 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 June 21 07:48 EDT 2024. Contains 373541 sequences. (Running on oeis4.)