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.
Basic electricity in a dry situation
Spot the outlier
Rotate a Matrix by 90 degrees
Remove from a 2-D matrix all the rows that contain at least one element less than or equal to 4
Solve a ballot counting problem
Solve an ODE: equation C
Sum the elements in rows of the Levine triangle
Compute the Bernoulli numbers
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