In spite of having done some exercises, I still find it harder to understand exponential generating function deeply than ordinary generating function. Could someone explain it "deeply"? Or are there any articles on that?
Deep understanding on exponential generating function
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combinatorics
generating-functions
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3anon guessed correctly, [here's](http://www.artofproblemsolving.com/blog/10601) an old blog post by Qiaochu somewhat related to this. – 2011-11-06