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A188207 Number of nondecreasing arrangements of n numbers in -(n+3)..(n+3) with sum zero 1
1, 6, 25, 126, 649, 3486, 19138, 107233, 610358, 3521260, 20547836, 121095602, 719833595, 4311542748, 25999063108, 157723186593, 962014388419, 5896435229442, 36301479759571, 224396764731302, 1392253538833522 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Column 5 of A188211

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..24

EXAMPLE

Some solutions for n=3

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

..1....0....2....0...-2....1....1...-3....1....0...-1...-1...-2...-1...-1...-1

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

CROSSREFS

Sequence in context: A153481 A099359 A073967 * A275541 A082430 A136593

Adjacent sequences:  A188204 A188205 A188206 * A188208 A188209 A188210

KEYWORD

nonn

AUTHOR

R. H. Hardin Mar 24 2011

STATUS

approved

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Last modified March 20 15:43 EDT 2019. Contains 321345 sequences. (Running on oeis4.)