Lgd.e.g.f.

[Michael Somos]

Seqfan,

> but I have no idea what "Lgd.e.g.f." is.

Okay, I did have some clues after all, and after sending the
original article I realized exactly what it is. It is the
derivate of the log of the e.g.f. In other words, if A(x) is
the e.g.f. then A'(x)/A(x) is the Lgd.e.g.f. and some very
nice properties connect A(x) and A'(x)/A(x). There are likely
several other examples of this which are not indicated in
OEIS as yet. The first step might be to come up with a good
name for this concept. Shalom, Michael