Please try to solve a harder version "Problem 44448. Project Euler: Problem 14 Longest Collatz sequence"
Which values occur exactly three times?
Create a cell array out of a struct
Better bullseye matrix
Check that number is whole number
Breaking Out of the Matrix
Generalised Hamming Number
Divisors for big integer
Mirror, mirror on the wall, who is fairest of them all?
Decrypt the cypher using XOR encryption (for beginners)
Two functions (to be sure)
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