# A124675 (b-file synthesized from sequence entry)
1 1
2 2
3 6
4 8
5 120
6 12
7 5040
8 384
9 324
10 80
11 39916800
12 144
13 6227020800
14 672
15 90
16 10321920
17 355687428096000
18 2592
19 121645100408832000
20 1600
21 756
22 84480
23 25852016738884976640000
24 62208
25 9000000
26 1198080
27 14285134080
28 18816