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Aug 26, 2017 at 23:31 comment added darij grinberg This fact has been recently rediscovered and discussed at mathoverflow.net/questions/273399/… , where I gave a different combinatorial proof.
Nov 17, 2016 at 17:02 comment added Ira Gessel For similar recurrences (and a great reference on all sorts of results on counting labeled trees), see J. W. Moon's Counting Labelled Trees, especially section 3.8, math.ucla.edu/~pak/hidden/papers/….
S Nov 17, 2016 at 14:29 history suggested F. C.
added the tag trees
Nov 17, 2016 at 14:20 review Suggested edits
S Nov 17, 2016 at 14:29
S Nov 4, 2014 at 14:17 history suggested Daniel Soltész CC BY-SA 3.0
The formula was wrong, and the OP did not correct it. Added some non important text to make it 6 characters.
Nov 4, 2014 at 14:05 review Suggested edits
S Nov 4, 2014 at 14:17
Nov 4, 2014 at 4:16 vote accept James Propp
Nov 4, 2014 at 3:31 answer added Sam Hopkins timeline score: 8
Nov 4, 2014 at 2:34 history asked James Propp CC BY-SA 3.0