  The Dirac APS eta invariant on a Berger sphere of dimension $2n-1$ is
discovered, numerically, to coincide, up to spin factors, with the Dirac
conformal anomaly on a round sphere of even dimension, $n$. The analytical
expression, given in terms of a generalised Bernoulli polynomial, is shown to
equal a known conjecture for the eta invariant. Weingart's generating function
is also obtained with no extra work.
