# A067050 (b-file synthesized from sequence entry)
0 1
1 1
2 1
3 3
4 2
5 1
6 6
7 60
8 6
9 1
10 10
11 3024
12 12600
13 24
14 1
15 15
16 240240
17 2874009600
18 38102400
19 120
20 1
21 21
22 27907200
23 129470223826944000
24 159950125679984640000
25 2112397056000
26 720
27 1
28 28
29 4475671200
30 1754345199379977566208000000