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.
Calculate the Levenshtein distance between two strings
Test if a Number is a Palindrome without using any String Operations
Energy of a photon
Getting the indices from a matrix
Approximation of Pi (vector inputs)
Find pairs of primes with the same digit sum and a specified separation
Find the smallest prime with n inside
Solve an ODE: equation C
Label primes with the Erdos-Selfridge classification
Determine aquifer properties: unsteady pump test in a confined aquifer
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