Please try to solve a harder version "Problem 44448. Project Euler: Problem 14 Longest Collatz sequence"
Back to basics 6 - Column Vector
Area of an Isoceles Triangle
Sum of odd numbers in a matrix
Narcissistic number ?
Without the French accent please!
Can you beat the lottery again (for hardcore coder) ?
Pandigital number n°3 (Inspired by Project Euler 32)
Generalised Hamming Number
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