Drexel dragonThe Math ForumDonate to the Math Forum



Search All of the Math Forum:

Views expressed in these public forums are not endorsed by Drexel University or The Math Forum.


Math Forum » Discussions » sci.math.* » sci.math.independent

Topic: What squares are the sums of two or more cubes?
Replies: 6   Last Post: Oct 19, 2012 9:18 PM

Advanced Search

Back to Topic List Back to Topic List Jump to Tree View Jump to Tree View   Messages: [ Previous | Next ]
Peter Percival

Posts: 954
Registered: 10/25/10
What squares are the sums of two or more cubes?
Posted: Oct 18, 2012 8:06 PM
  Click to see the message monospaced in plain text Plain Text   Click to reply to this topic Reply

What squares of positive integers are the sums of two or more distinct
cubes of positive integers?

9 = 1 + 8, 36 = 1 + 8 + 27, 100 = 1 + 8 + 27 + 64, 225 = 1 + 8 + 27 + 64 +
125, etc.

On the LHSs are the squares of the triangular numbers. Are there any
examples not in that sequence?

--
Using Opera's revolutionary email client: http://www.opera.com/mail/



Point your RSS reader here for a feed of the latest messages in this topic.

[Privacy Policy] [Terms of Use]

© Drexel University 1994-2014. All Rights Reserved.
The Math Forum is a research and educational enterprise of the Drexel University School of Education.