# A137668 (b-file synthesized from sequence entry)
1 0
2 1
3 0
4 -2
5 0
6 2
7 0
8 24
9 0
10 -40
11 0
12 16
13 0
14 -720
15 0
16 1568
17 0
18 -1120
19 0
20 272
21 0
22 40320
23 0
24 -104704
25 0
26 102144
27 0
28 -45696
29 0
30 7936
31 0
32 -3628800
33 0
34 10720512
35 0
36 -12869120
37 0
38 8042496
39 0
40 -2618880
41 0
42 353792
43 0
44 479001600
45 0
46 -1565051904
47 0
48 2188865536
49 0
50 -1712668672
51 0
52 789854208
53 0
54 -202369024
55 0