No, bicarbonate (HCO3-) and carbonate (CO3--) are not the same, although as you can see they're related. In the pH range useful for brewing, almost all carbonate is actually in solution as bicarbonate, so it's reasonable to assume that all alkalinity is the result of bicarbonate. Given that assumption, you can convert alkalinity as CaCO3 to bicarbonate by multiplying by 1.2.
So your HCO3- range is about 178-215 ppm.