# A156586 (b-file synthesized from sequence entry)
0 1
1 1
2 1
3 1
4 4
5 1
6 1
7 20
8 20
9 1
10 1
11 120
12 600
13 120
14 1
15 1
16 840
17 25200
18 25200
19 840
20 1
21 1
22 6720
23 1411200
24 8467200
25 1411200
26 6720
27 1
28 1
29 60480
30 101606400
31 4267468800
32 4267468800
33 101606400
34 60480
35 1
36 1
37 604800
38 9144576000
39 3072577536000
40 21508042752000