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A199829 Number of -5..5 arrays x(0..n+1) of n+2 elements with zero sum and no two neighbors summing to zero 1
70, 660, 5390, 49302, 462234, 4340094, 41008804, 389832124, 3723199342, 35697026718, 343371074564, 3312138136660, 32026131818486, 310327172410762, 3012628449222084, 29294846427926718, 285286085845772334 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 5 of A199832

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..200

EXAMPLE

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

CROSSREFS

Sequence in context: A104475 A169712 A235488 * A271495 A232587 A027804

Adjacent sequences:  A199826 A199827 A199828 * A199830 A199831 A199832

KEYWORD

nonn

AUTHOR

R. H. Hardin Nov 11 2011

STATUS

approved

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Last modified April 10 18:49 EDT 2021. Contains 342853 sequences. (Running on oeis4.)