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169 (Posted on 2004-11-04) Difficulty: 4 of 5
Find all integers 1<=k<=169 for which 169 is not the sum of k nonzero squares.

The squares are not necessarily unique. For example k=5: 169=1+4+4+16+144.

This should be done without a brute force program.

See The Solution Submitted by Brian Smith    
Rating: 2.5000 (2 votes)

Comments: ( Back to comment list | You must be logged in to post comments.)
re(4): No Subject | Comment 8 of 13 |
(In reply to re(3): No Subject by Nosher)

I think that "This should be done without a brute force program" also applies to doing it by hand in a brute-force manner. I could be wrong, but I think that Brian had a method in mind where you didn't have to specifically check every number from 1 to 169.
  Posted by Sam on 2004-11-05 06:21:58

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