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A199846 Number of -7..7 arrays x(0..n-1) of n elements with zero sum and no element more than one greater than the previous 1
1, 8, 41, 206, 944, 4188, 17879, 74424, 303400, 1218440, 4833416, 18992142, 74057460, 287035502, 1107086841, 4253339267, 16289667330, 62230152461, 237255014892, 903101912666, 3433312226666, 13039708953325, 49488269035164 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Column 7 of A199847

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..146

EXAMPLE

Some solutions for n=6

..4....4....6....7....6....4....3....4....4....6....6...-1....4....6....4....6

..2....4....2...-2....4....4....3....4....5....2....7....0....4....5....5....6

..1....0....2...-2....0...-2....2....1....4....2...-1....1....4....2....6...-1

.-1...-1...-3...-2...-1...-1...-1...-3...-1...-4...-1....2....1...-5...-4...-2

..0...-4...-2...-1...-4....0...-1...-2...-5...-3...-5....0...-7...-4...-6...-4

.-6...-3...-5....0...-5...-5...-6...-4...-7...-3...-6...-2...-6...-4...-5...-5

CROSSREFS

Sequence in context: A273145 A273176 A080840 * A188180 A026968 A026978

Adjacent sequences:  A199843 A199844 A199845 * A199847 A199848 A199849

KEYWORD

nonn

AUTHOR

R. H. Hardin Nov 11 2011

STATUS

approved

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Last modified July 24 08:43 EDT 2021. Contains 346273 sequences. (Running on oeis4.)