Timeline for Sum of series (n/1) + (n/2) + (n/3) + (n/4) +…….+ (n/n)
Current License: CC BY-SA 4.0
16 events
| when toggle format | what | by | license | comment | |
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| Oct 5, 2020 at 12:37 | comment | added | BurnsBA | "the Harmonic Progression which has no formula to calculate" -- this is wrong, see mathworld.wolfram.com/HarmonicSeries.html | |
| Oct 3, 2020 at 0:03 | history | became hot network question | |||
| Oct 2, 2020 at 20:19 | comment | added | plshelp | Sorry I'll delete my post - mixed something up in my mind. But notice that your sum corresponds to the divisor summatory function $D(n)$ | |
| Oct 2, 2020 at 17:27 | comment | added | Loc Truong | @plshelp thank you, but honestly I don't see the relation between the prime numbers and the sum, please post the explanation if possible. | |
| Oct 2, 2020 at 17:18 | history | edited | Discrete lizard♦ |
edited tags
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| Oct 2, 2020 at 17:15 | answer | added | gnasher729 | timeline score: 0 | |
| Oct 2, 2020 at 16:29 | comment | added | integrator | I deleted it when I saw you explicitly wanted a log-time solution, but sure I'll keep it up. | |
| Oct 2, 2020 at 16:24 | comment | added | Loc Truong | @eru-cs please keep your answer, it's the one that I'm looking for. But I need the proof for that one to understand the solution. Otherwise it's just copy-paste stuff. | |
| Oct 2, 2020 at 16:22 | history | edited | Loc Truong | CC BY-SA 4.0 |
deleted 2 characters in body
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| Oct 2, 2020 at 16:21 | answer | added | integrator | timeline score: 7 | |
| Oct 2, 2020 at 16:17 | comment | added | Loc Truong | @eru-cs thanks, but I need to know how to come up with the second formula, which only needs to loop until sqrt of n. | |
| Oct 2, 2020 at 16:14 | comment | added | Loc Truong | @plshelp it's integer division | |
| Oct 2, 2020 at 16:13 | history | edited | Loc Truong | CC BY-SA 4.0 |
update question details
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| Oct 2, 2020 at 16:06 | comment | added | integrator | Relevant link: math.stackexchange.com/questions/487401/… | |
| Oct 2, 2020 at 16:02 | comment | added | plshelp | Hold up; are you talking about integer division or normal division? | |
| Oct 2, 2020 at 15:53 | history | asked | Loc Truong | CC BY-SA 4.0 |