# A189842 (b-file synthesized from sequence entry)
1 1
2 2
3 6
4 24
5 120
6 720
7 4800
8 34752
9 280512
10 2528256
11 25282560
12 278323200
13 3242649600
14 40330371072
15 536528954880
16 7633092132864