Order 1/N3 corrections to the conformal anomaly of the (2,0) theory in six dimensions

Using Supergravity on AdS 7 × S 4 we calculate the bulk one-loop contribution to the conformal anomaly of the (2,0) theory describing N coincident M5 branes. When this is added to the tree-level result, and an additional subleading order contribution calculated by Tseytlin, it gives an expression for the anomaly that interpolates correctly between the large N theory and the free (2,0) tensor theory corresponding to N =1. Thus we can argue that we have identified the exact N -dependence of the anomaly, which may have a simple protected form valid away from the large N limit.