Looking at my result there, seems to be something I need to start doing. TIL :P To be fair, I did check 3/6/12 - just to make sure it was double and not powers

Looking at my result there, seems to be something I need to start doing. TIL :P To be fair, I did check 3/6/12 - just to make sure it was double and not powers of two. Guess that's the articles point though isn't it!