A226413 - OEIS

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A226413

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

6, 100, 418, 1123, 2841, 5567, 10865, 18583, 31261, 48727, 75757, 109221, 159501, 220447, 304821, 405909, 543893, 699387, 910035, 1147085, 1450099, 1791973

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

OFFSET

1,1

LINKS

Table of n, a(n) for n=1..22.

EXAMPLE

Some solutions for n=3:

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

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

0 2 2 -1 0 0 1 0 1 -2 2 -1 2 -2 1 0

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

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

CROSSREFS

Row 5 of A226410.

Sequence in context: A360339 A127636 A281502 * A226344 A278430 A374889

Adjacent sequences: A226410 A226411 A226412 * A226414 A226415 A226416

KEYWORD

nonn,more

AUTHOR

R. H. Hardin, Jun 06 2013

STATUS

approved