very cool question: learn some new tricks, and get 10 points, why not?!
Hint to spare the pain : string(NaN)==
Return the 3n+1 sequence for n
Multiply 2 numbers
Sophie Germain prime
5 Prime Numbers
Fast 1-D Convolution (full shape)
Generating random matrix with given probability mass function
Fast 1-D Convolution (valid shape)
String Array Basics, Part 1: Convert Cell Array to String Array; No Missing Values
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