A226344 - OEIS

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A226344

Number of nondecreasing -n..n vectors of length 5 whose dot product with some other -n..n vector equals 5

6, 100, 419, 1139, 2857, 5621, 11041, 18937, 31901, 49666, 77246, 111366, 162502, 224402, 309982, 412526

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,1

COMMENTS

Row 5 of A226340

LINKS

Table of n, a(n) for n=1..16.

EXAMPLE

Some solutions for n=3

.-2...-3...-2...-3...-2...-2....2...-1...-1...-2...-3....1...-3...-3...-2...-2

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

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

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

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

CROSSREFS

Sequence in context: A127636 A281502 A226413 * A278430 A374889 A131311

Adjacent sequences: A226341 A226342 A226343 * A226345 A226346 A226347

KEYWORD

nonn

AUTHOR

R. H. Hardin Jun 04 2013

STATUS

approved