( 1024 birthdays, 16777216 days in year)
Table of Expected vs. Observed counts:
<= 6 20.0 16
7 30.0 23
8 59.9 58
9 106.6 104
10 170.5 164
11 248.0 274
12 330.6 356
13 406.9 439
14 465.1 479
15 496.1 509
16 496.1 510
17 466.9 447
18 415.0 395
19 349.5 321
20 279.6 276
21 213.0 206
22 154.9 167
23 107.8 100
24 71.9 58
25 46.0 51
26 28.3 21
>= 27 37.3 26
Overall p is 0.7772