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!)
A226336 Number of nondecreasing -4..4 vectors of length n whose dot product with some other -4..4 vector equals n 1
2, 34, 130, 480, 1139, 2973, 6068, 12823, 23590, 43620, 74135, 125962, 200993, 319516, 486423, 735303, 1075392, 1562050, 2210979, 3107839, 4279431, 5852307, 7870810, 10518228, 13859945, 18155322, 23504230, 30259780, 38566432, 48902774 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 4 of A226340

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..52

EXAMPLE

Some solutions for n=3

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

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

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

CROSSREFS

Sequence in context: A200821 A200166 A226407 * A213826 A259108 A064202

Adjacent sequences: A226333 A226334 A226335 * A226337 A226338 A226339

KEYWORD

nonn

AUTHOR

R. H. Hardin Jun 04 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 December 1 14:52 EST 2022. Contains 358468 sequences. (Running on oeis4.)