Hi Jack. That would be 37, if I'm adding correctly. That's already taken.
Here's a list I have of the guesses already posted.
15, 17, 19
21, 23, 24, 27, 28, 29
30, 31, 32, 33, 34, 35, 36, 37, 38, 39
41, 44, 45, 46, 47, 48, 49
50, 51, 52, 53, 54, 55, 56, 57, 58, 59
60, 61, 62, 64, 65, 68
70
94
I've double checked it, so hopefully it's correct up to this point. I'll try to keep it updated.