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A226425
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Number of nondecreasing -n..n vectors of length 4 whose dot product with some lexicographically greater or equal nondecreasing -n..n vector equals 4
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1
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5, 57, 159, 411, 800, 1415, 2394, 3848, 5764, 8484, 12067, 16546, 22403, 29687, 38104, 48908, 61775, 76410, 94297, 115030, 137929, 165596, 197096, 231351, 271259, 316553, 365077, 421509, 484107, 549942, 626240, 710102, 798025, 898590, 1006589
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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
..1...-1...-2...-2...-2...-3...-3...-3...-1...-3....0...-1...-3...-1...-2...-1
..1...-1...-1...-2...-1...-3...-2....0....0...-2....0....2....1...-1...-2....0
..1....1....0...-1....0....1...-2....0....1....1....1....2....2....2...-2....0
..1....3....3....2....0....3....1....2....1....2....1....2....2....3....2....2
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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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