Are there collections of already generated *large* strongly regular graphs available to download? By *large* I mean $n \geq 200$ where $n$ is the number of vertices. I found Ted Spence's [page on srgs](http://www.maths.gla.ac.uk/~es/srgraphs.php), which contains a very nice list of srgs up to $n \leq 64$, but they are kind of on the small side. I also searched for software that can generate them but wasn't able to find one. (Although Brendan McKay's [nauty](http://cs.anu.edu.au/~bdm/nauty/) software is extremely useful but doesn't seem to have an option to generate srgs).
Note that all I'm looking for is few samples (not an exhaustive list which is probably not practical). 
 Are there such sites or software available? Apologies if this does not qualify as a pure research question. Thank you! 



Generating (or availability of) large strongly regular graphs
[Sage(math)](https://sagemath.org) aims to have graphs from A.Brouwer's [web pages on s.r.g.'s](https://www.win.tue.nl/%7Eaeb/graphs/srg/srgtab.html) available. Namely, at least one example for each case for which the existence is known. E.g. it will be possible to do things like



```
sage: t=graphs.strongly_regular_graph(126, 60, 33); t
complement(Taylor two-graph SRG): Graph on 126 vertices

```

The current beta version ([6.9.beta4](https://github.com/sagemath/sage/blob/develop/src/sage/graphs/strongly_regular_db.pyx)) has about 20% missing; after the work in progress [here](https://trac.sagemath.org/ticket/19098) merged (hopefully in the forthcoming Sagemath 6.9) there will be at most 192 graphs missing.


Many of these graphs are actually [available](https://doc.sagemath.org/html/en/reference/graphs/sage/graphs/graph_generators.html) already in the current stable release of Sage, but there they aren't easy to find just from parameters.




---


In 2016 we already had all but a handful [implemented](https://doi.org/10.1007/s10623-016-0264-x). Today (Feb 2023) few more are available, still half a dozen need to be implemented.


