# A078921 (b-file synthesized from sequence entry)
1 1
2 -1
3 2
4 2
5 -3
6 6
7 -6
8 8
9 -12
10 24
11 24
12 -30
13 40
14 -60
15 120
16 -120
17 144
18 -180
19 240
20 -360
21 720
22 720
23 -840
24 1008
25 -1260
26 1680
27 -2520
28 5040
29 -5040
30 5760
31 -6720
32 8064
33 -10080
34 13440
35 -20160
36 40320
37 40320
38 -45360
39 51840
40 -60480
41 72576
42 -90720
43 120960
44 -181440
45 362880
46 -362880
47 403200
48 -453600
49 518400
50 -604800