Please try to solve a harder version "Problem 44448. Project Euler: Problem 14 Longest Collatz sequence"
Create a cell array out of a struct
Check if number exists in vector
Permute diagonal and antidiagonal
Sum of series VI
Getting the indices from a matrice
Recycled Numbers (CodeJam Qualification Round 2012)
BLOCK x3 (Version 4)
Divisors for big integer
Replicate elements in vectors
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