I'm looking for a way to help balancing mobs in our mud. Following Herne's Smaug building guide, I came to this formula, that is used to calculate a base for the exp that a mob can give:

level*level*level*5 + maxhitpoints - (ac-50)*2 + ((damnum*damsize+damroll) *50) + Hitroll*level*10

Does anyone know how this formula is designed?

What do you mean designed?

Well, I mean, from where appear those numbers? why is level*level*level and no level*level? or why is *50 and not *10? what system have been used to calibrate the amount of experience a mob will give?

I think reading too much into this might not be very productive; I'm guessing that people just tweaked the numbers until they were satisfied. It might be worth drawing the equation with a graphing program of some kind to see how the base xp varies with the parameters. But I would not try to find the "greater meaning" or some masterminded plan in those numbers.