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.
Implement a ROT13 cipher
Longest run of consecutive numbers
Getting the indices from a matrice
Remove entire row and column in the matrix containing the input values
Compute the sum of reciprocals of quadratics
Compute the perimeter of an ellipse
Compute the Bernoulli numbers
Find the smallest prime with n inside
Determine aquifer properties: unsteady pump test in a confined aquifer
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