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

Links

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

Example

All solutions for 3 X 1:
.-2....0...-1...-4...-3
..0....0....0....0....0
..2....0....1....4....3

Crossrefs

Row 3 of A188002.

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