You're right about the ranging counts. One says 37 for a medium sized, another says 23. Makes life a little hard because I eat 2 every morning. The ones I buy are really tiny though so I count them as 25 each.
But if anyone has an accurate number that'd be great!
My calorie counter service says that it is 23 calories for 60g. Do you have a scale? If not you might want to consider one, I find my very helpful, because even a cup of something varies a lot with how small or big you cut it.