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A226428 Number of nondecreasing -n..n vectors of length 7 whose dot product with some lexicographically greater or equal nondecreasing -n..n vector equals 7 0
8, 254, 1488, 5573, 17441, 44256, 108478, 224471, 443879, 815019, 1452101, 2431380 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Row 7 of A226422

LINKS

Table of n, a(n) for n=1..12.

EXAMPLE

Some solutions for n=3

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

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

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

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

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

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

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

CROSSREFS

Sequence in context: A162132 A297051 A213412 * A277421 A171612 A053717

Adjacent sequences:  A226425 A226426 A226427 * A226429 A226430 A226431

KEYWORD

nonn

AUTHOR

R. H. Hardin Jun 06 2013

STATUS

approved

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Last modified June 12 14:32 EDT 2021. Contains 344957 sequences. (Running on oeis4.)