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A226407
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Number of nondecreasing -4..4 vectors of length n whose dot product with some nondecreasing -4..4 vector equals n
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0
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2, 34, 130, 479, 1123, 2959, 6041, 12820, 23401, 43439, 73976, 125962, 199900, 318926, 485768, 735222, 1072033
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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
.-2....1...-1...-3...-4...-1...-3...-3...-3...-4...-4...-1...-4...-1...-3...-4
..1....3....0....0...-4...-1...-1....2....1...-4....3....0...-3....0....0...-1
..4....3....4....3....3....0...-1....4....3....1....4....3...-3....1....1....3
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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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