A188006 Number of nondecreasing arrangements of 6 numbers x(i) in -(n+4)..(n+4) with the sum of sign(x(i))*x(i)^2 zero

106, 176, 286, 421, 636, 862, 1206, 1587, 2114, 2698, 3450, 4255, 5356, 6522, 8026, 9451, 11468, 13434, 15970, 18457, 21512, 24652, 28728, 32569, 37426, 42000, 47824, 53393, 60688, 67492, 75464, 83349, 93086, 102446, 113894, 123963, 137198, 149672

Offset

1,1

Comments

Row 6 of A188002

Links

R. H. Hardin, Table of n, a(n) for n = 1..51

Example

Some solutions for n=3
.-7...-3...-7...-7...-4...-6...-6...-6...-6...-4...-7...-3...-6...-7...-4...-6
..2...-3...-1...-6...-3...-3....0...-3...-6...-4...-3...-2...-1...-5....0...-6
..2....0....0...-6...-2....1....3...-3...-6...-3....2...-2....0....0....2...-3
..3....1....3....6....0....2....3....2....6...-3....3....2....0....0....2...-2
..4....1....4....6....2....2....3....5....6....5....3....2....1....5....2....6
..4....4....5....7....5....6....3....5....6....5....6....3....6....7....2....7

Crossrefs

Sequence in context: A045093 A304978 A078776 * A160725 A044338 A044719

Adjacent sequences: A188003 A188004 A188005 * A188007 A188008 A188009

Keyword

nonn

Author

R. H. Hardin Mar 18 2011

Status

approved