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A188000 Number of nondecreasing arrangements of n numbers x(i) in -(n+5)..(n+5) with the sum of sign(x(i))*x(i)^2 zero 0
1, 8, 11, 75, 216, 1206, 5443, 30358, 160866, 907542, 5096859, 29196613, 168131646, 978358588, 5726901772, 33757032775 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Column 7 of A188002

LINKS

Table of n, a(n) for n=1..16.

EXAMPLE

All solutions for n=3

.-4...-8...-5...-6...-4...-7...-2...-3...-5...-1....0

.-3....0....3....0....0....0....0....0....0....0....0

..5....8....4....6....4....7....2....3....5....1....0

CROSSREFS

Sequence in context: A038289 A079607 A000787 * A167621 A289287 A006072

Adjacent sequences:  A187997 A187998 A187999 * A188001 A188002 A188003

KEYWORD

nonn

AUTHOR

R. H. Hardin Mar 18 2011

STATUS

approved

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Last modified January 27 16:38 EST 2022. Contains 350611 sequences. (Running on oeis4.)