I think this assertion part is obsolete, in the form of "assert(islychrel(n))" or "assert(~islychrel(n))" now will fail directly on the new cody system. my code run at my computer seems fine by the way.
It looks like there is an error in the test suite, because 3664 becomes 475574 after 5 iterations, although the test suite says that it's not a Lychrel number. (In addition, OEIS A023108, which lists all non-Lychrel numbers up to 3675, excludes 3664).
Currently, the test suite seems to be working fine.
ok! sorry for this, I missunderstood the problem... :-(
my solution is here:
So, I'M NOT LEADER IN THIS PROBLEM!
Sorry, you are leader... :-(
Project Euler: Problem 16, Sums of Digits of Powers of Two
Maximum value in a matrix
Add two numbers
Back to basics - mean of corner elements of a matrix
Get all prime factors
Determine if a Given Number is a Triangle Number
Clock Hand Angle 1
The Dark Side of the Die
Right Triangle Side Lengths (Inspired by Project Euler Problem 39)
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