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.
Find the next prime number
Side of an equilateral triangle
Find the Oldest Person in a Room
Number of paths on a n-dimensional grid
Number of paths on a 3d grid
Smallest n, for n! to have m trailing zero digits
Make a rainbow matrix (follow-up to checkerboard matrix)
Number of even divisors of a given number
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