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A226417
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Number of nondecreasing -3..3 vectors of length n whose dot product with some lexicographically greater or equal nondecreasing -3..3 vector equals n
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1
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2, 17, 61, 159, 365, 847, 1488, 2751, 4739, 7551, 11714, 18109, 26101, 37645, 53282, 73032, 98844, 133192, 174317, 227188, 293529, 372908, 470112, 590497, 730305, 899614, 1102423, 1337131, 1613462, 1941278, 2313556, 2748251, 3253127, 3824256
(list;
graph;
refs;
listen;
history;
text;
internal format)
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OFFSET
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1,1
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COMMENTS
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LINKS
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EXAMPLE
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Some solutions for n=3
.-3...-2...-3....0....0....0...-1...-1...-3...-2...-2...-2...-3...-1...-2...-3
.-3...-1...-1....0....1....1....1...-1...-2....1...-2....2....2....1....1...-1
..2....1...-1....1....1....2....3....3...-2....2....3....3....2....2....1....0
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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STATUS
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approved
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