When the paper first came out, I did a careful count of the deaths and censored events and came to the same conclusion as you did. There were well over 44 patients that were not on the published curve. I could not reconcile this contradiction so I just set the numbers aside. My counting did not break it down into time increments as you did, so to compare with your numbers I went back and recounted. My numbers (see below) are very close to your counts.
First 12 mo (7,34) (censored, deaths)
12 to 18 mo (4,62)
18 to 24 mo (37,47)
24 to 30 mo (21,23)
30 to 36 mo (7,16)
11 LTFU
182 died
65 censored
to equal 258 patients
331 - 258 = 73 patients not on the chart