# A225422 (b-file synthesized from sequence entry)
11 2
12 2
13 6
14 12
15 12
16 24
17 60
18 180
19 360
20 1260
21 5040
22 15120
23 55440
24 166320
25 831600
26 4324320
27 36756720
28 367567200
29 2327925600
30 27935107200