A resistor is not the best component to reduce inrush current, a coil is far better.
This would be true with a DC power supply, where the inductance would have no impact on the steady-state current. Restating/rephrasing what wombat2go said, with AC supply, the inductance value L would have to strike a balance between the time constant L/R being large enough to limit the inrush current, and the AC impedance L times omega small enough that the lamp still shines at near-nominal power.
But, after all, a DC power supply might kill two birds with one stone, if it is voltage-stabilized.