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A183916 Number of nondecreasing arrangements of n numbers in -8..8 with sum zero 2
1, 9, 41, 177, 649, 2137, 6375, 17575, 45207, 109583, 252117, 553981, 1168261, 2374753, 4669367, 8908546, 16535154, 29927526, 52925886, 91617530, 155484150, 259062316, 424306230, 683919048, 1085984406, 1700352360, 2627337510 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Column 8 of A183917

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..63

EXAMPLE

Some solutions for n=4

.-6...-7...-7...-3...-7...-7...-4...-4...-4...-1...-2...-8...-6...-4...-5...-8

.-3...-5....2...-1....0....1...-2....1...-3...-1...-2...-1....1....0...-1....1

..4....4....2....0....0....1....0....1....3....0....1....4....2....1....1....3

..5....8....3....4....7....5....6....2....4....2....3....5....3....3....5....4

CROSSREFS

Sequence in context: A056243 A083584 A276780 * A199311 A146239 A083085

Adjacent sequences: A183913 A183914 A183915 * A183917 A183918 A183919

KEYWORD

nonn

AUTHOR

R. H. Hardin Jan 07 2011

STATUS

approved

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Last modified November 28 12:20 EST 2022. Contains 358416 sequences. (Running on oeis4.)