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 8 - Matrix Diagonals
Sum the Digits of a Number
Is the input divisible by 3?
find the maximum element of the matrix
Finding perimeter of a rectangle
Sum of series V
Sum of series VII
Sum of series III
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