# A166759 (b-file synthesized from sequence entry)
1 0
2 0
3 720
4 32400
5 434160
6 3309120
7 17807040
8 75294000
9 266274720
10 819872640
11 2259483120
12 5685633360
13 13259846160
14 28992150720
15 59970549600
16 118213974000
17 223381776960