Table 1 in LT3758 datasheet contains values of RT - Timing Resistor for setting the Switching Frequency.

Can I choose values of RT not quite equal to those from the table, e.g. 30.0 kOhm instead of 30.9 - to set the Switching Frequency not equal to 400 kHz but near this value?

Or only RT sharp values must be chosen from the table?