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A226416 Number of nondecreasing -2..2 vectors of length n whose dot product with some lexicographically greater or equal nondecreasing -2..2 vector equals n 1
2, 11, 20, 57, 88, 180, 254, 439, 587, 905, 1163, 1669, 2084, 2832, 3455, 4517, 5411, 6855, 8086, 10001, 11648, 14116, 16260, 19387, 22123, 26005, 29429, 34189, 38412, 44160, 49293, 56169, 62339, 70467, 77800, 87337, 95976, 107060, 117146, 129951 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 2 of A226422

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..70

EXAMPLE

Some solutions for n=3

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

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

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

CROSSREFS

Sequence in context: A175927 A116990 A279772 * A146087 A064975 A115095

Adjacent sequences:  A226413 A226414 A226415 * A226417 A226418 A226419

KEYWORD

nonn

AUTHOR

R. H. Hardin Jun 06 2013

STATUS

approved

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Last modified April 22 06:35 EDT 2019. Contains 322329 sequences. (Running on oeis4.)