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A188008
Number of nondecreasing arrangements of 8 numbers x(i) in -(n+6)..(n+6) with the sum of sign(x(i))*x(i)^2 zero.
2
1670, 2983, 5191, 8373, 13343, 20224, 30358, 43750, 62354, 86173, 118859, 159445, 213459, 277174, 362216, 461894, 590268, 739245, 924861, 1139511, 1409109, 1712354, 2087342, 2501092, 3011962, 3576355, 4267359, 5020859, 5914551, 6899802
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OFFSET
1,1
LINKS
R. H. Hardin,
Table of n, a(n) for n = 1..31
EXAMPLE
Some solutions for n=3
.-5...-8...-6...-9...-6...-8...-6...-4...-6...-7...-6...-8...-8...-6...-8...-7
.-4...-7...-6...-6...-2...-8...-6...-4...-5...-6...-3...-8...-7...-6...-8...-6
.-4...-4...-3...-2...-2...-2...-6...-4...-1...-2...-3....0...-6...-4...-4...-3
.-1....2...-3...-2...-1....0....0...-1....1...-2...-2....1...-2....1...-1...-2
.-1....3....2...-2....0....0....2....0....2....2...-1....1...-1....2....3....3
..1....4....5...-1....2....2....2....0....4....2....3....3....3....3....6....3
..3....6....5....7....4....8....6....0....4....2....5....6....8....5....6....4
..7....8....6....9....5....8....8....7....5....9....5....9....9....7....8....8
CROSSREFS
Row 8 of
A188002
.
Sequence in context:
A216590
A098974
A109564
*
A145755
A252300
A339960
Adjacent sequences:
A188005
A188006
A188007
*
A188009
A188010
A188011
KEYWORD
nonn
AUTHOR
R. H. Hardin
, Mar 18 2011
STATUS
approved
