This is a reference request.


Do you know where I can find the dimensions of the faithful projective representations of $S\_n$ and $A\_n$ for $n\ge 5$?


Thank you in advance.



Faithful projective representations of symmetric groups
Maybe it's worth adding a reference to a modern treatment of Schur's work in book form, which might be easier to read than the original paper of Schur (note that I'm unrelated to the authors):


P.N. Hoffman and J.F. Humphreys, *Projective representations of the symmetric groups.*
Q-functions and shifted tableaux.
Oxford Mathematical Monographs.
Oxford Science Publications.
The Clarendon Press, Oxford University Press, New York, 1992. 


