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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 1
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 (list; graph; refs; listen; history; text; internal format)
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

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Last modified June 17 14:09 EDT 2019. Contains 324185 sequences. (Running on oeis4.)