This Arduino NTC class supports both 3 and 4 coefficient Steinhart/Hart equations
For Vishay NTC's you can find the 3 Steinhart/Hart coefficients here:
https://www.vishay.com/en/thermistors/ntc-rt-calculator/
For other brands you can calculate the 4 coefficients using the spreadsheet from northstarsensors:
https://www.northstarsensors.com/calculating-temperature-from-resistance
See the pdf file for instructions