Challenge: sum of squares. Let's break 299

[Thomas Okken]

I took another look at those videos, and the description box of the second one has a link to Charlie Turner's code that verified N <= 299: https://github.com/charlieturner/square-sum-sequences

If I understand this correctly (not a Python expert myself), this is a Jupyter workbook containing Python code which in turn uses SageMath. Jupyter is a system that creates Mathematica-like workbooks for interactive Python-based math work.

So, the actual Python code is buried in certain sections of the workbook, and in turn may be hard to understand if you don't know SageMath. I won't claim to know any of this except basic Python and having had Jupyter demoed to me once; I just thought I'd pass it on.