A188003 Number of nondecreasing arrangements of 3 numbers x(i) in -(n+1)..(n+1) with the sum of sign(x(i))*x(i)^2 zero

3, 4, 5, 8, 9, 10, 11, 12, 15, 16, 17, 20, 21, 24, 25, 28, 29, 30, 33, 34, 35, 36, 37, 42, 45, 46, 47, 50, 53, 54, 55, 56, 59, 62, 63, 66, 67, 70, 73, 76, 77, 78, 79, 82, 83, 84, 85, 86, 91, 94, 97, 100, 101, 104, 105, 106, 109, 110, 113, 116, 117, 118, 119, 128, 129, 130, 133

Offset

1,1

Comments

Row 3 of A188002

Links

R. H. Hardin, Table of n, a(n) for n = 1..200

Example

All solutions for 3X1
.-2....0...-1...-4...-3
..0....0....0....0....0
..2....0....1....4....3

Crossrefs

Sequence in context: A105020 A286053 A112594 * A120519 A100614 A274231

Adjacent sequences: A188000 A188001 A188002 * A188004 A188005 A188006

Keyword

nonn

Author

R. H. Hardin Mar 18 2011

Status

approved