( 1024 birthdays, 16777216 days in year)
Table of Expected vs. Observed counts:
<=6 20.0 17
7 30.0 34
8 59.9 61
9 106.6 102
10 170.5 178
11 248.0 252
12 330.6 351
13 406.9 429
14 465.1 483
15 496.1 486
16 496.1 539
17 466.9 451
18 415.0 411
19 349.5 341
20 279.6 261
21 213.0 193
22 154.9 153
23 107.8 87
24 71.9 75
25 46.0 45
26 28.3 21
>=27 37.3 30
Overall p is 0.4832