Skip to main content
10 events
when toggle format what by license comment
Jan 29 at 21:15 comment added Alexander Chervov Here is a kind of way to think of that as a kind of potential well - which explains why it is easy to scramble - but not easy to solve : kaggle.com/competitions/santa-2023/discussion/471859
Feb 12, 2019 at 6:42 vote accept Alexander Chervov
Feb 11, 2019 at 8:49 history edited Denis Serre CC BY-SA 4.0
added 4 characters in body
Feb 10, 2019 at 19:26 comment added Alexander Chervov @YCor thank you very much ! I rechecked the datum - it is indeed 3240. I corrected the post.
Feb 10, 2019 at 19:25 history edited Alexander Chervov CC BY-SA 4.0
deleted 41 characters in body
Feb 10, 2019 at 18:03 comment added YCor Well, checked OEIS: oeis.org/A080601, it's indeed 3240.
Feb 10, 2019 at 17:56 comment added YCor This hole at $n=3$ is very weird, if not suspicious. Actually, if $b(n)$ is the cardinal of the $n$-ball, one has $b(6)\le b(3)^2$, which is not satisfied here with $b(3)^2=(324+243+18+1)^2=343396$. Stupid interpolation would naturally expect a value for the cardinal of the 3-sphere between 3200 and 3300. 324 thus sound like a misprint, it's probably something around 3240.
Feb 10, 2019 at 12:30 answer added Derek Holt timeline score: 22
Feb 10, 2019 at 11:48 history edited Alexander Chervov CC BY-SA 4.0
added 1 character in body
Feb 10, 2019 at 11:42 history asked Alexander Chervov CC BY-SA 4.0