Timeline for How to calculate the sum of general type $\sum_{k=0}^n {n\choose k} {n\choose k+a} {2 k- n + a \choose r }$?
Current License: CC BY-SA 4.0
9 events
| when toggle format | what | by | license | comment | |
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| Aug 7, 2022 at 14:23 | answer | added | Max Alekseyev | timeline score: 5 | |
| Aug 5, 2022 at 20:08 | answer | added | Fedor Petrov | timeline score: 5 | |
| Aug 5, 2022 at 19:46 | history | edited | T. Amdeberhan | CC BY-SA 4.0 |
added 24 characters in body
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| Aug 5, 2022 at 19:40 | answer | added | T. Amdeberhan | timeline score: 7 | |
| Aug 5, 2022 at 18:06 | history | edited | Sergii Voloshyn | CC BY-SA 4.0 |
edited title
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| Aug 5, 2022 at 18:02 | comment | added | Sergii Voloshyn | Thank you, I corrected this. | |
| Aug 5, 2022 at 17:59 | history | edited | Sergii Voloshyn | CC BY-SA 4.0 |
edited body
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| Aug 5, 2022 at 17:50 | comment | added | Richard Stanley | Is there a typo? The factor ${2l-n+a\choose r}$ does not depend on $k$. | |
| Aug 5, 2022 at 17:34 | history | asked | Sergii Voloshyn | CC BY-SA 4.0 |