Fix numbers n,k. Is there a closed formula known for the number of kregular graphs consisting of n edges? I have a method of enumerating kregular graphs on n edges, and would like to have a number to compare the algorithm against.

1$\begingroup$ I don't think there's any closed form formula, but you can compare your results with the data in OEIS, such as here: oeis.org/A005638 (for 3regular graphs) or here: oeis.org/A051031. This is indexed by the number of vertices, not edges, but of course for fixed k this is the same up to a factor of k/2. $\endgroup$– Alon AmitApr 21, 2010 at 18:44

$\begingroup$ See the answers to this question mathoverflow.net/questions/77730/… $\endgroup$– j.c.Jun 16, 2018 at 3:23

$\begingroup$ @Gwyn Whieldon Is it possible to access your work some how ? $\endgroup$– SagarMApr 17, 2021 at 15:00
1 Answer
I think the answer is no, but I would consult the following link:
http://www.mathe2.unibayreuth.de/markus/reggraphs.html
which contains tables of the sums of the numbers you are interested in. The author is very generous with sharing data that is not posted online.