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!)
A226415 Number of nondecreasing -n..n vectors of length 7 whose dot product with some nondecreasing -n..n vector equals 7. 0
8, 281, 1631, 6041, 18765, 47291, 113273, 235677, 465959, 853593, 1515861 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Row 7 of A226410.
LINKS
Table of n, a(n) for n=1..11.
EXAMPLE
Some solutions for n=3
.-3...-2...-3...-3...-3...-3...-1...-2...-3...-2...-3...-3...-3...-3...-3...-3
.-1...-1...-1....1...-3...-3....1...-2...-3...-2...-3...-2...-3...-3...-3...-2
.-1...-1...-1....1...-3...-3....1...-1...-1...-2...-1....0...-2....1...-3...-2
.-1....1....0....1...-1...-2....1....0...-1...-1....3....1....0....1...-1...-1
.-1....2....1....1...-1...-1....1....3....0....0....3....1....0....1....1....2
.-1....2....3....1....2....0....1....3....2....1....3....1....3....1....2....3
..2....2....3....2....2....3....2....3....2....1....3....3....3....3....3....3
CROSSREFS
Cf. A226410.
Sequence in context: A280761 A247215 A079929 * A226346 A217488 A332128
Adjacent sequences: A226412 A226413 A226414 * A226416 A226417 A226418
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jun 06 2013
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 5 08:12 EDT 2024. Contains 373102 sequences. (Running on oeis4.)