# A129655 (b-file synthesized from sequence entry)
1 1
2 2
3 6
4 24
5 120
6 720
7 5040
8 55440
9 720720
10 12252240
11 232792560
12 6750984240
13 276790353840
14 12732356276640
15 523410559111440
16 24076885719126240
17 1131613628798933280
18 100713612963105061920
19 20042008979657907322080