What is the sum of the following sequence:
Σ(2k-1)^2 for k=1...n
for different n?
Additional test cases have been added.
Back to basics 22 - Rotate a matrix
find radius of cone
Find the hypotenuse
Replace every 3rd element in a vector with 4
Sum of series VI
Sum of series III
Sum of series VII
Sum of series IV
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