# A177690 (b-file synthesized from sequence entry)
0 1
1 1
2 12
3 6
4 120
5 120
6 280
7 140
8 5040
9 5040
10 55440
11 55440
12 720720
13 720720
14 720720
15 360360
16 24504480
17 24504480
18 155195040
19 155195040
20 31039008
21 10346336
22 237965728
23 713897184
24 17847429600
25 17847429600
26 160626866400
27 22946695200