# A152708 (b-file synthesized from sequence entry)
1 1
2 2
3 6
4 24
5 120
6 720
7 5040
8 40320
9 362880
10 3421440
11 35166240
12 389352960
13 4694073888
14 60648751360
15 847015485216
16 12403530135936