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A226343 Number of nondecreasing -n..n vectors of length 4 whose dot product with some other -n..n vector equals 4. 0
5, 67, 193, 480, 972, 1736, 2962, 4733, 7063, 10319, 14629, 19869, 26785, 35285, 45069, 57543, 72439, 89195, 109721, 133257, 159325, 190665, 226371, 264885, 309905, 360889, 415399, 478479, 548675, 622131, 707461, 800841, 898901 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Row 4 of A226340.
LINKS
EXAMPLE
Some solutions for n=3:
-3 -3 -1 -1 -3 -3 -3 -2 -3 -3 2 -3 -2 -3 -1 -2
-3 -1 -1 2 -3 -1 -3 -2 -2 -2 2 -1 -1 -3 0 1
-2 0 0 3 -3 2 2 -1 2 -1 2 3 1 -2 3 3
-1 1 0 3 2 3 2 1 3 0 2 3 1 0 3 3
CROSSREFS
Sequence in context: A185230 A142009 A226412 * A067393 A212731 A316146
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jun 04 2013
STATUS
approved

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Last modified July 18 04:50 EDT 2024. Contains 374377 sequences. (Running on oeis4.)