Thanks for this post! 
I was battling with the same problem trying to get a reading from a different kind of thermistor type sensor branded Koso BF140125 (for motorcycles).
I got it working with the same code. Only difference I made was to play around with the resistor values til I found the right combo.
I put the thermistor type sensor in a boiling pot of water together with a DS18B20 temperature sensor for calibration. Then I swapped around different resistors to get to the sweet spot. I got it working within 2 degrees Celsius accuracy in the range of 70-110 °C.
I ended up using 3 resistors in series - 10k + 3.3k + 100.
I attached the schema I used to connect my Arduino Nano to the sensor:
