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.
Return 'on' or 'off'
Create an n-by-n null matrix and fill with ones certain positions
Duplicate a character
Create an anti-identity matrix
Back to Basics - Find no. of elements in a matrix?
Sum of series I
Sum of series VII
Sum of series III
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