Timeline for What is the value of $\sum _{n=1}^{\infty \:}\frac{n!}{n^n}$? [closed]
Current License: CC BY-SA 3.0
9 events
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| Jul 4, 2014 at 23:17 | comment | added | Pietro Majer | Given that there is probably no hope of a simple expression in terms of elementary functions, I'd suggest that the OP changes the question in the broader sense: are there other relevant identities for this number? | |
| Jul 4, 2014 at 20:44 | history | closed | Todd Trimble | Needs details or clarity | |
| Jul 4, 2014 at 20:42 | comment | added | Todd Trimble | Yeah, I really think that with regard to Yemon's comment, the question needs to be clarified. I believe there are various notions of "numbers in closed form" and I would guess this number is not in closed form according to at least one of these notions, but to give substance to the question, one has to be more specific. | |
| Jul 4, 2014 at 20:40 | comment | added | The Masked Avenger | The series grows like sqrt(6n)e^-n, so you need only 30 terms for at least 10 digits precision. You can use an inverter or a Google search to find more info. | |
| Jul 4, 2014 at 20:23 | answer | added | Lucian | timeline score: 1 | |
| Jul 4, 2014 at 19:54 | review | First posts | |||
| Jul 4, 2014 at 20:07 | |||||
| Jul 4, 2014 at 19:39 | history | edited | Yemon Choi |
removed tags that were misused
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| Jul 4, 2014 at 19:38 | comment | added | Yemon Choi | What do you mean by "the exact value"? Not everything can be written in terms of "familiar constants" and "familiar algebraic operations". The exact value of this thing might just be what ever it is. | |
| Jul 4, 2014 at 19:36 | history | asked | user54650 | CC BY-SA 3.0 |