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.
Find the two-word state names
Getting the absolute index from a matrix
Find the definite integral of various linear functions
A different counting method
Compute the Bernoulli numbers
Determine the Zeckendorf expansion of a number
Evaluate the prime zeta function
Count the ways pairs of parentheses can be matched correctly
Count the square-full divisors of a number
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