Thank you Keperoze, this helped me

What's the point of a spoiler flag in a solutions thread?

spoiler flag, please...

Thanks

This helped me a ton, thanks!

Anyone came up with a working solution for this? I'm also puzzled as to why the formula works for smaller numbers, but doesn't work for the big ones.
Even when specifying int. I also found that the formula breaks at exactly 16th digit. I.E. the first 16 digits are always correct.
EDIT: I finally have an answer. The thing is, even when I specify int(), python still converts to float when dividing. Naturally, changing all divisions to floor divisions (//) solved the problem.

Thank you for that. Finally found the issue. I forgot to reset my variables after calling the function once.

The Python tests are working correctly. Please note that there are almost 14K solves in that language. If you do not know why your code is not working, please post as a question. Posting as an issue is strictly for when the kata has a fault. If you like, you may post your code with a spoiler tag and use proper markdown formatting. Someone may be able to help. Also, you can check out this documentation on troubleshooting your solution.

Coming from a Python noob, for those (like me, one hour ago) who think that "there's something wrong with this kata and there's no way my script is wrong...right?" I say this:
So far, this is the most effective kata at teaching some very fundamental concepts that I definitely missed.
I strongly recommend reading this: https://nedbatchelder.com/text/names1.html
I promise, you'll come back with a solution.