The OEIS mourns the passing of Jim Simons and is grateful to the Simons Foundation for its support of research in many branches of science, including the OEIS.
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!)
A189501 Number of arrangements of 5 nonzero numbers x(i) in -n..n with the sum of floor(x(i)/x(i+1)) equal to zero 1
12, 136, 928, 3388, 9394, 22088, 45892, 86416, 152136, 251964, 400562, 608572, 895302, 1288110, 1800136, 2460254, 3306706, 4375254, 5709802, 7332744, 9299616, 11690792, 14567750, 17952362, 21909788, 26581910, 32027018, 38302012, 45552824 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Row 4 of A189498
LINKS
EXAMPLE
Some solutions for n=5
..4...-1...-2....5...-4....2....2...-1...-4...-1....2...-3...-5...-1....5....1
..4...-2....2....2....3...-5...-5....3...-1....5...-2....5....4....3....5...-4
.-5....3....3....2....2....5...-5....5....4....3...-5....3...-4...-3....2....4
.-3....5....5...-5...-2...-4....4....2...-2....2....3...-2...-4...-4...-1....2
..3....4....3....4...-1...-1....2...-3....2...-2....1...-1...-2...-2....2....3
CROSSREFS
Sequence in context: A290474 A030023 A194013 * A373107 A351514 A216081
KEYWORD
nonn
AUTHOR
R. H. Hardin Apr 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 May 30 15:08 EDT 2024. Contains 372968 sequences. (Running on oeis4.)