Timeline for What OEIS sequence is this?
Current License: CC BY-SA 4.0
15 events
| when toggle format | what | by | license | comment | |
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| Aug 12, 2020 at 2:07 | comment | added | Pierre PC | I would add something along the line of "given an infinite collection of unlabelled disjoint circles...". I think what induces confusion is we feel like we can pick circles later, which is another question (for instance, for three points, either they are aligned and they can be put on two circles, or they are not so they can be put on just one circle, so I would have thought N(3) is at most 2). | |
| Aug 11, 2020 at 23:29 | comment | added | Gerry Myerson | It should be possible to understand a question here from what's written here, without needing to go off to stack.imgur | |
| Aug 11, 2020 at 23:02 | comment | added | A Z | @Amir Sagiv. I reformulated it in this way: For n points N(n) is the number of configurations where each point either lies on some circle or is a center of some circle. Each point lying on a circle can belong to only 1 circle and each center point can be the center of only 1 circle. | |
| Aug 11, 2020 at 22:59 | history | edited | A Z | CC BY-SA 4.0 |
added 33 characters in body
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| Aug 10, 2020 at 20:42 | comment | added | A Z | Frankly I think it is more or less intuitively clear if you look at the examples: i.sstatic.net/gdrBi.png Another problem that arises from this construction is to count the number of circles used in all the configurations for each n. This sequence goes like 2,8,22,54... and it is not in the OEIS. I do not in any way insist that it should be added though. | |
| Aug 10, 2020 at 19:30 | history | became hot network question | |||
| Aug 10, 2020 at 14:57 | review | Close votes | |||
| Aug 19, 2020 at 3:06 | |||||
| Aug 10, 2020 at 14:35 | comment | added | Amir Sagiv | I'm not sure I understand your construction, it's a little too-loosely defined. Can you be more precise? | |
| Aug 10, 2020 at 13:42 | vote | accept | A Z | ||
| Aug 10, 2020 at 13:21 | answer | added | Christopher Beem | timeline score: 9 | |
| Aug 10, 2020 at 12:19 | comment | added | A Z | configurations of points. | |
| Aug 10, 2020 at 12:15 | comment | added | Gerry Myerson | Number of configurations of what, exactly? of points? of circles? | |
| Aug 10, 2020 at 11:25 | review | First posts | |||
| Aug 10, 2020 at 14:35 | |||||
| Aug 10, 2020 at 11:24 | comment | added | Mr. Palomar | oeis.org/… | |
| Aug 10, 2020 at 11:23 | history | asked | A Z | CC BY-SA 4.0 |
