# A137524 (b-file synthesized from sequence entry)
1 2
2 -3
3 6
4 4
5 -24
6 24
7 0
8 60
9 -180
10 120
11 -24
12 0
13 720
14 -1440
15 720
16 0
17 -840
18 0
19 8400
20 -12600
21 5040
22 960
23 0
24 -20160
25 0
26 100800
27 -120960
28 40320
29 0
30 60480
31 0
32 -423360
33 0
34 1270080
35 -1270080
36 362880
37 -120960
38 0
39 2419200
40 0
41 -8467200
42 0
43 16934400
44 -14515200
45 3628800
46 0
47 -11975040
48 0
49 79833600
50 0
51 -167650560
52 0