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A199829
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Number of -5..5 arrays x(0..n+1) of n+2 elements with zero sum and no two neighbors summing to zero
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1
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70, 660, 5390, 49302, 462234, 4340094, 41008804, 389832124, 3723199342, 35697026718, 343371074564, 3312138136660, 32026131818486, 310327172410762, 3012628449222084, 29294846427926718, 285286085845772334
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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....2....0....0...-5...-3....3...-4...-3...-2....2....1....5....2...-4....0
.-5....4...-4...-4....1...-3...-5....2....4...-5...-5....1...-3...-3....0....4
..4...-1....3...-2....3...-4...-3....5....3...-2....4...-4....5...-5....5....4
.-2...-4....0....4...-1....5....0...-4....1....4....0....5...-4....3...-1...-3
..1...-1....1....2....2....5....5....1...-5....5...-1...-3...-3....3....0...-5
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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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