This book says
In the next section we introduce a stochastic process called a Markov chain which does
allow forcorrelations and also has enough structure and simplicity to
allow forcomputations to be carried out. We will also see that Markov chains can be used to model a number of the above examples.
Cambridge gives this explanation of allow for
to consider someone or something when you are planning something
and this explanation of allow
to give permission for someone to do something, or to not prevent something from happening
Although there seems to be some nuances between "allow" and "allow for".
Could "allow for" be replaced by "allow" in this particular case?