Discussions

First off, I'd like to say that I love your videos! The reason I am writing: I ran across Feynman's "differentiation under the integral" trick years ago when I went on a bit of a Feynman kick (recommend! a brilliant man...). It recently popped up again on my fb here: https://medium.com/cantors-paradise/differentiation-under-integral-sign-w-examples-9afbf121d668 If you haven't already, his technique might be worth a look, and perhaps a video? Just a thought. Anyway, keep on doing good things! Sincerely, James

I found this after a couple of google searches: However, it seems the diagonals across the different squares are not magic. For example, the 8-1-6 diagonal doesn't add to 42. On the contrary, all of the diagonals from opposite corners like 19-14-9 and any cross-section that does not involve a diagonal i.e. if it were a 3d cube they would be orthogonally adjacent does work. My question is if one exists where ALL diagonals, cross-sections, and vertical or horizontal sums yield the same value. I've been wondering about this for along time. Thanks

Is there a power of 2 if rearranged form another powers of 2. Powers of 2 with trailing zeros is not counted.