Need a better test suite to prevent cheesy solutions like this one. :-) Some N>10 values in there would help. N>50 would be even better.
Sum of first n terms of a harmonic progression
Return elements unique to either input
Calculate the Hamming distance between two strings
Add more zeros
Right Triangle Side Lengths (Inspired by Project Euler Problem 39)
Number of paths on a 3d grid
Equal temperament - musical notes and frequency
Number of paths on a n-dimensional grid
Under the sea: Snell's law & total internal reflection
The number of trailing zero digit of a factorial
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