# A165823 (b-file synthesized from sequence entry)
0 1
1 2
2 6
3 24
4 30
5 1440
6 42
7 120960
8 30
9 7257600
10 66
11 958003200
12 2730
13 5230697472000
14 6
15 62768369664000
16 510
17 64023737057280000