Where the pattern lists how many stitches you should have on your needles after the raglan increases each set of numbers is 6 stitches short. These numbers reflect the 6 stitch overlap for the button band.
The correct number of stitches after the raglan increase are as follows:
212, 244, 276, 308, 336, 368, 400
We are currently updating the pattern and will be happy to email you an updated version if you wish.