  An infinite class of analytic AdS_7 x S^3 solutions has recently been found.
The S^3 is distorted into a "crescent roll" shape by the presence of D8-branes.
These solutions are conjectured to be dual to a class of "linear quivers", with
a large number of gauge groups coupled to (bi-)fundamental matter and tensor
fields. In this paper we perform a precise quantitative check of this
correspondence, showing that the a Weyl anomalies computed in field theory and
gravity agree. In the holographic limit, where the number of gauge groups is
large, the field theory result is a quadratic form in the gauge group ranks
involving the inverse of the A_N Cartan matrix C. The agreement can be
understood as a continuum limit, using the fact that C is a lattice analogue of
a second derivative. The discrete data of the field theory, summarized by two
partitions, become in this limit the continuous functions in the geometry.
Conversely, the geometry of the internal space gets discretized at the quantum
level to the discrete data of the two partitions.
