Timeline for A big list of Narayana-enumerated objects
Current License: CC BY-SA 4.0
3 events
| when toggle format | what | by | license | comment | |
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| May 7, 2022 at 11:53 | vote | accept | Svjetlan Feretic | ||
| May 7, 2022 at 11:53 | comment | added | Svjetlan Feretic | Thank you for the quick and detailed answer. In fact, my two Narayana-enumerated objects are: 1) Dyck paths with $2n$ steps and $k$ rises at even level, and 2) Dyck paths with $2n$ steps and $k-1$ rises at odd level. Now it remains to find a proper reference for those two objects. (In fact, I could also write that those two objects are classical.) In "Elements of the sets enumerated by super-Catalan numbers", the authors cite a 1999 paper by Bob Sulanke [32], who (in [32]) already says that my object 2) is one of the better-known Narayana-enumerated objects. | |
| May 7, 2022 at 10:06 | history | answered | Carlo Beenakker | CC BY-SA 4.0 |