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A187997
Number of nondecreasing arrangements of n numbers x(i) in -(n+2)..(n+2) with the sum of sign(x(i))*x(i)^2 zero
1
1, 5, 8, 34, 88, 421, 1696, 8373, 40681, 211234, 1111148, 5987390, 32752144, 181900825, 1022304310, 5807285713, 33301251729, 192592146915, 1122301928144, 6585197085192, 38881934489280, 230894913761474, 1378357322150656, 8268192777096128
OFFSET
1,2
COMMENTS
Column 4 of A188002
EXAMPLE
All solutions for n=3
.-5....0...-4...-1...-4...-5...-2...-3
..3....0...-3....0....0....0....0....0
..4....0....5....1....4....5....2....3
CROSSREFS
Sequence in context: A199396 A275003 A032790 * A188065 A204676 A219947
KEYWORD
nonn
AUTHOR
R. H. Hardin Mar 18 2011
EXTENSIONS
Terms from a(17) on by R. J. Mathar, May 10 2023
STATUS
approved