Timeline for How many double paths in a grid?
Current License: CC BY-SA 3.0
6 events
| when toggle format | what | by | license | comment | |
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| Feb 9, 2012 at 16:56 | history | edited | Kevin O'Bryant | CC BY-SA 3.0 |
changed "$a$" to "$P$"
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| Feb 9, 2012 at 16:28 | answer | added | Richard Stanley | timeline score: 3 | |
| Feb 9, 2012 at 5:43 | vote | accept | Will Sawin | ||
| Feb 9, 2012 at 5:16 | comment | added | Gerhard Paseman | You might set up a recurrence on a direction, say down. For b=2 I get a choose 2 (in my head, so don't be alarmed if you get something different), and for b+1 I get a different terms depending on when the upper path leaves the first row. If you generate some recurrences, I or someone else may be able to find a closed form for you. Gerhard "Ask Me About System Design" Paseman, 2012.02.08 | |
| Feb 9, 2012 at 5:11 | answer | added | Gjergji Zaimi | timeline score: 8 | |
| Feb 9, 2012 at 4:56 | history | asked | Will Sawin | CC BY-SA 3.0 |