What Number Comes Next? - Numberphile

Maybe pause the video and see if you can figure these out?
Featuring Neil Sloane of OEIS fame... More links & stuff in full description below, including spoilers ↓↓↓

Some OEIS sequences from this video...

NUMBERPHILE

Videos by Brady Haran

Correction:
The first table at 1.06 reads
n a(n)
1 1
2 4
3 8
4 48
but it should be
0 1
1 4
2 8
3 48

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[Thee_Sinner]

Him: Don’t get distracted into looking for something that’s too complicated

Also him: * looking to be confused at his own solution * there’s an invisible zero.

[paperbird]

Rules are simple
"Make ur own rules " 😲😲

[cubicardi]

7:21 Well obviously they're primes


Me: cries in corner

[Bodyknock]

6:36 “E is banned” - Math dad joke confirmed. 🙄

[Wooflays]

"are you getting the idea? let me continue: 60, 62, 64, 66, 2000, ..." hahaha

[maxfindus]

1, 2, 48, 46, 37, 2000, 48, 48, 48, 27, 19, ... what's next and why?
Answer: 18 because that was the list of the numbers I randomly came up with when I wrote this comment, and 18 is the next one I'm thinking about.

[ashish]

62, 64, 66, 2000.. that escalated quickly

[CRSBO]

These are like the mathematicians version of Dad Jokes, and I love them

[justincarrasco]

I feel like this is the kind of stuff the Sphinx asks you before it eats you.

[colinbrash]

I’ve watched this like 10 times and I keep coming back and watching it again. Same with all of his videos. I love this guy so much. Please keep doing more with him.

[JJ-kleq]

From now on I’m using my own font where none of the numbers has any holes. Always leaving a hole in the loop.

See? I found the loophole in the first sequence.

[wolframstahl]

German eban sequence:
5, 8, 12, 20, 25, 28, 50, 55, 58, 80, 85, 88.
That's where it ends.

[stuartofblyth]

"There's an invisible zero" (2:37). Yeah. Right. Spotted that straight away. Not.

[peppermann]

Neil has the brain of a professor and the cheeky enthusiasm of a 7 year old. Always a pleasure to watch 😊👏.

[CharmEng]

at 3:52 where he makes a biiiig grin and says "what's the rule?" <3 <3 haha! I figured it out!

what a fun video! thanks Neil and Brady!

[charlesmorton]

Anyone else really want EMIRPS to be SEMIRP?

[Wegnerrobert]

Many people are really taking this too seriously. Numberpile isn't a channel for rigorous mathematics, it's a channel for having fun with math and numbers.
Of course people are interested in unexpected and mysterious patterns but not every video has to be about that and this one clearly isn't trying to.
Numberphile also shouldn't be your go to source for learning about mathematics. I think Neil has a very nice style and the sequences were cute.

[ecicce]

I figured the eban one out on my own. Now I am pretty proud 🙂

[maria]

Why is everyone acting so offended? I think this guy is adorable and his obvious love for math makes me smile. You all need to relax

[alejrandom]

2:51 I can't believe I paused the video and had that on my desk for a week. I feel sad