3 ms·What's the simpler pattern?by oisdk 7y agoWhat's the simpler pattern?paideic 7y agoPresumably multiplying by two and adding one? That's the pattern that jumped out to me, unless they're talking about something more subtle.oisdk 7y agoOh, of course! Looking at it now that's pretty obvious, lol. Although I think even if I had spotted that I still would have put it into oeis to see if there was a quick membership test.mankeysee 7y agoWhich is to say, 2^n-1.