What is the sum of the following sequence:
Σ(-1)^(k+1) (2k-1)^2 for k=1...n
for different n?
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Problem Comments
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1 Comment
goc3
on 13 Jun 2017
Additional test cases have been added.
Solution Comments
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2 Comments
Georges
on 10 Sep 2014
Please check your test suites, results must have opposite signs.
Grzegorz Knor
on 11 Sep 2014
Thanks! The problem now is reformulated;)
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