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.
Extract Built In Functions and Toolbox Functions from String or Function Handle
Sum of odd numbers in a matrix
Pernicious Anniversary Problem
generate nth pentatope number
Find the sum
List the good primes
Compute the perimeter of an ellipse
Find the nth term in the digit inventory sequence
Count numbers whose reciprocals' decimal expansions terminate
Solve an ODE: equation B
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