What is the sum of the following sequence:
Σk(k+1) for k=1...n
for different n?
Additional test cases have been added.
Project Euler: Problem 2, Sum of even Fibonacci
Angle between Two Vectors
05 - Vector Equations 2
Check that number is whole number
Replace every 3rd element in a vector with 4
Sum of series I
Sum of series III
Sum of series VII
Sum of series VI
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