I was obtaining 34 for 7e4 too, but it's not a problem of the test suite. It just means that your code is not testing all possible combinations (and there are probably other numbers that will fail too). There is no known algorithm to generate the list of integer complexity (https://oeis.org/A005245), which means brute force is the only way to be sure. And brute force finds 32 for 7e4.
It someone doesn't believe 7e4 = (1+1)*(1+1)*(1+1)*(1+1)*(1+ (1+1)*(1+1+1)*(1+1+1)*(1+1+1)*(1+1+1)*(1+1+1)*(1+1+1)*(1+1+1)) (32 ones). Or 2^4*(1 + 2*3^7).
Make a checkerboard matrix
Equidistant numbers containing certain value in an interval
Flag largest magnitude swings as they occur
Get the elements of diagonal and antidiagonal for any m-by-n matrix
String Array Basics, Part 3: Convert Cell Array with Missing Values to String Array
Apply Function to Each Field of a Structure Array: Part 2
Hankelize a matrix
Histogram of histogram
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