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A188204 Number of nondecreasing arrangements of n numbers in -(2n-2)..(2n-2) with sum zero 1
1, 3, 13, 86, 649, 5444, 48417, 450096, 4323349, 42611589, 428774562, 4388708804, 45566531999, 478878888344, 5085572069608, 54500021186920, 588726212033973, 6404580593674139, 70112392484932177, 771869051769933762 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,2
COMMENTS
Diagonal of A188211
LINKS
EXAMPLE
All solutions for n=3
.-2....0...-2...-3...-1...-3...-4...-2...-4...-4...-3...-2...-1
..0....0...-2...-1....0....0....0....1....1....2....1...-1...-1
..2....0....4....4....1....3....4....1....3....2....2....3....2
CROSSREFS
Sequence in context: A023037 A354436 A157451 * A152112 A167810 A331646
KEYWORD
nonn
AUTHOR
R. H. Hardin Mar 24 2011
STATUS
approved

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Last modified April 15 12:18 EDT 2024. Contains 371686 sequences. (Running on oeis4.)