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A188331 Number of nondecreasing arrangements of n nonzero numbers in -(n+5)..(n+5) with sum zero 1
0, 7, 32, 191, 1076, 6252, 36454, 214784, 1274786, 7621670, 45861804, 277601505, 1689349524, 10331083034, 63462615822, 391449573689, 2423684611456, 15058835953673, 93865873942596, 586844454182810, 3679133098371548 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Column 7 of A188333

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..26

EXAMPLE

Some solutions for n=6

-10..-10..-11...-4...-4...-5..-10..-11..-11...-6...-6...-7...-7...-5..-11..-10

.-6...-1...-8...-4...-4...-5...-6...-5...-5...-4...-2...-5...-6...-5...-8...-9

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

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

..5....4....9....4....4....4....9....8....4....3....4....3....7....5....6....5

.10....4....9....7....8....7...11....9....9....7....8....7....8....6...10....5

CROSSREFS

Sequence in context: A050148 A188208 A302995 * A177766 A240390 A024093

Adjacent sequences:  A188328 A188329 A188330 * A188332 A188333 A188334

KEYWORD

nonn

AUTHOR

R. H. Hardin Mar 28 2011

STATUS

approved

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Last modified May 8 06:11 EDT 2021. Contains 343653 sequences. (Running on oeis4.)