  We propose a recipe - arguably the simplest - to compute the holographic
type-B Weyl anomaly for general higher-derivative gravity in asymptotically AdS
spacetimes. In 5 and 7 dimensions we identify a suitable basis of curvature
invariants that allows to read off easily, without any further computation, the
Weyl anomaly coefficients of the dual CFT. We tabulate the contributions from
quadratic, cubic and quartic purely algebraic curvature invariants and also
from terms involving derivatives of the curvature. We provide few examples,
where the anomaly coefficients have been obtained by other means, to illustrate
the effectiveness of our prescription.
