# A152372 (b-file synthesized from sequence entry)
1 1
2 2
3 6
4 24
5 120
6 720
7 5040
8 37248
9 311256
10 2830368
11 28685456
12 307302656
13 3744207972
14 48232689632
15 668100774772
16 9819878376880