login
This site is supported by donations to The OEIS Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A066958 Number of ordered primitive solutions (x,y,z) to xy + yz + zx = n with x,y,z >= 1. 2
0, 0, 1, 0, 3, 0, 3, 3, 3, 0, 9, 0, 3, 6, 6, 3, 9, 0, 9, 6, 6, 0, 15, 6, 3, 12, 9, 0, 15, 0, 15, 9, 6, 6, 18, 6, 3, 12, 18, 6, 21, 0, 9, 12, 6, 6, 27, 6, 9, 12, 18, 6, 15, 12, 18, 18, 6, 0, 33, 0, 15, 18, 18, 9, 18, 12, 9, 18, 18, 0, 39, 6, 9, 24, 18, 12, 18, 0, 27, 18, 15, 6, 33, 12, 6, 24, 30 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,5

LINKS

T. D. Noe, Table of n, a(n) for n=1..1000

CROSSREFS

Cf. A066851.

Sequence in context: A097994 A318050 A053604 * A066851 A288571 A270028

Adjacent sequences:  A066955 A066956 A066957 * A066959 A066960 A066961

KEYWORD

nonn,easy

AUTHOR

Colin Mallows, Jan 26 2002

EXTENSIONS

More terms from Vladeta Jovovic, Apr 14 2002

STATUS

approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified March 20 19:52 EDT 2019. Contains 321349 sequences. (Running on oeis4.)