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.
The Goldbach Conjecture, Part 2
Arrange vector in ascending order
Evaluate the zeta function for real arguments > 1
Find terms in the Connell sequence
Solve an ODE: separable equation
Compute the nth term from the golden sieve
Find the nth Fibbinary number
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