Timeline for Number of trees with n nodes and m leaves
Current License: CC BY-SA 3.0
12 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| S May 11, 2017 at 8:46 | history | suggested | Vincent | CC BY-SA 3.0 |
removed some superfluous spaces that made the bottom two rows not look triangle-like any more. Now it looks better (at least in chrome on windows 7)
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| May 11, 2017 at 8:09 | comment | added | Vincent | Is there a rule to compute each entry from the two entries above as in Pascal's triangle? | |
| May 11, 2017 at 8:07 | review | Suggested edits | |||
| S May 11, 2017 at 8:46 | |||||
| Oct 7, 2014 at 3:20 | history | edited | Max Alekseyev | CC BY-SA 3.0 |
oeis links updated
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| Apr 17, 2010 at 11:30 | comment | added | Joel David Hamkins | No problem, Hans, I know what you mean. I guess one way is to track down that reference. | |
| Apr 17, 2010 at 2:22 | comment | added | Hans-Peter Stricker | @Joel: Sorry for not accepting your answer, but I am looking for the "idea" of counting those trees, not for the results only. | |
| Apr 16, 2010 at 18:19 | comment | added | Reid Barton | To maybe save others some confusion: The top row is n=2, and the leftmost column is k=2. | |
| Apr 16, 2010 at 17:13 | comment | added | Joel David Hamkins | I edited it to use a clearer representation of the data. | |
| Apr 16, 2010 at 17:12 | history | edited | Joel David Hamkins | CC BY-SA 2.5 |
Used a different triangle to represent the data.
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| Apr 16, 2010 at 17:06 | comment | added | Joel David Hamkins | The OEIS is just for (one dimensional) sequences, but this is a two-dimensional function, having two arguments. So they organize it in a triangle. | |
| Apr 16, 2010 at 16:59 | comment | added | Hans-Peter Stricker | I stumbled over this already, but couldn't make sense of the title: "the TRIANGLE of n nodes and k leaves". And the only reference - Harary's 'Graphical Enumeration' - is almost invisible at books.google.com. Are you sure? | |
| Apr 16, 2010 at 16:50 | history | answered | Joel David Hamkins | CC BY-SA 2.5 |