# A048870 (b-file synthesized from sequence entry)
0 1
1 1
2 1
3 4
4 10
5 1
6 30
7 132
8 27
9 1
10 336
11 2232
12 696
13 52
14 1
15 5040
16 46320
17 19500
18 2200
19 85
20 1
21 95040
22 1141920
23 606960
24 91800
25 5340
26 126
27 1
28 2162160
29 32639040
30 20991600
31 3986640
32 310170
33 11004
34 175
35 1
36 57657600
37 1061746560
38 802287360
39 183550080