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A199529 Number of -7..7 arrays x(0..n-1) of n elements with zero sum and no two consecutive zero elements 1
1, 14, 168, 2212, 29750, 407946, 5662636, 79345982, 1119873360, 15897133212, 226731289148, 3246399497138, 46636478912912, 671855095655758, 9702557118121642, 140418234266554336, 2035998107250999870 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Column 7 of A199530

LINKS

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

EXAMPLE

Some solutions for n=5

..3...-6...-3....5...-1....1....0....4...-7...-6...-6...-6....4...-3...-3...-4

.-3....7....0...-5....2...-2...-1...-4....2....5....5...-3....1...-2...-2....4

.-3....3....7....2....5...-7....4...-3....7....6...-2....6...-4...-2....7....3

.-3...-5...-1...-5...-7....7....0...-1...-2...-3....0....4....2....5....5...-3

..6....1...-3....3....1....1...-3....4....0...-2....3...-1...-3....2...-7....0

CROSSREFS

Sequence in context: A159738 A062148 A200164 * A098299 A254811 A099158

Adjacent sequences:  A199526 A199527 A199528 * A199530 A199531 A199532

KEYWORD

nonn

AUTHOR

R. H. Hardin Nov 07 2011

STATUS

approved

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Last modified September 20 10:49 EDT 2019. Contains 327229 sequences. (Running on oeis4.)