Seeking a math-related article about strange infinite series

Post date: 2019-09-13 14:14:32
Views: 225
My Google-foo is failing me. About a month ago, I started reading a very interesting article about a topic in mathematics. I read only the first few paragraphs before I got distracted by something. Now I want to finish the article, but I can't find it.

I'm not a mathematician, so I might be getting some details wrong, but this is how I remember it. The article talked about infinite series that seem like they're going to converge to a specific value (like pi or e), but then unexpectedly start to diverge away from that value after X number of terms. And as I recall, X can be fairly small, like 20 terms. Or, in some cases, it can be huge, like 10^10 terms.

I can't remember if the article had some overall point beyond just describing these strange series, but I know it wasn't an academic paper. It was published in some kind of popular outlet, like Quanta, Nautilus, or Seed.

It's not in my browser history, and I've had no success in Googling it. It's possible that I'm not remembering the specifics correctly, so I might be using the wrong search terms.
Number of Comments
Please click Here to read the full story.
 
Other Top and Latest Questions:
2-year Treasury yield rockets higher as many Fed officials signal possible hike this year
CME CEO Terrence Duffy says the exchange operator will sue CFTC over perpetual futures
'Passive' investors who dodged bitcoin are now forced to own SpaceX, which is three times more volatile
Mr. Queen: Full season
Interview with the Vampire: The Vampire Lestat: Toledo
From Mom and Dad to Just Mom
Unconventional lifestyle people: what those assets do?
People with high sleep needs?
Oil falls as International Energy Agency forecasts supply glut next year after U.S.-Iran deal
Treasury 2-year yield post-Fed spike 'exaggerated' or is there room for more? Strategists weigh in