# A181996 (b-file synthesized from sequence entry)
0 1
1 1
2 3
3 1
4 15
5 10
6 1
7 105
8 105
9 25
10 1
11 945
12 1260
13 490
14 56
15 1
16 10395
17 17325
18 9450
19 1918
20 119
21 1
22 135135
23 270270
24 190575
25 56980
26 6825
27 246
28 1
29 2027025
30 4729725
31 4099095
32 1636635
33 302995
34 22935
35 501
36 1
37 34459425
38 91891800
39 94594500
40 47507460
41 12122110
42 1487200