# A049410 (b-file synthesized from sequence entry)
1 1
2 3
3 1
4 6
5 9
6 1
7 6
8 51
9 18
10 1
11 0
12 210
13 195
14 30
15 1
16 0
17 630
18 1575
19 525
20 45
21 1
22 0
23 1260
24 10080
25 6825
26 1155
27 63
28 1
29 0
30 1260
31 51660
32 71505
33 21840
34 2226
35 84
36 1
37 0
38 0
39 207900
40 623700
41 333585
42 57456
43 3906
44 108
45 1
46 0
47 0
48 623700
49 4573800
50 4293135
51 1195425
52 131670