You're *very* close with this one. Remember that r is input as a double, not a string.
Convert a numerical matrix into a cell array of strings
middleAsColumn: Return all but first and last element as a column vector
Add two numbers
Side of an equilateral triangle
That's some divisor you've got there...
Now 20% off!
Pandigital Multiples of 11 (based on Project Euler 491)
Kurchan 4x4 - Optimal score
How Far Can You Throw Something?
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