[Dan Damelin]

Well, this is not ideal, but if your range for n is limited enough, you could create one table that calculates the various values for n, and then use that table as a lookup for your own n! function. (The lookup table could be closed, so it would not be visible.)

See example here:

https://codap.concord.org/releases/latest/static/dg/en/cert/index.html#shared=https%3A%2F%2Fcfm-shared.concord.org%2FeBUpBKFKJzDmxewhRN3O%2Ffile.json