The test case result for n=5 seems a tad high.
Tim, that last case is altperm(altperm(5)). I did that to discourage lookup solutions.
Indexed Probability Table
Sum of first n terms of a harmonic progression
I've got the power! (Inspired by Project Euler problem 29)
Sums of cubes and squares of sums
Draw a 'X'!
Identify prime words
Construct a prime circle
Compute the nth Pythagorean prime
Play Outside In with primes
List the nth prime quartet prefix
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