# A009422 (b-file synthesized from sequence entry)
0 0
1 0
2 2
3 -6
4 30
5 -160
6 1084
7 -8316
8 74456
9 -749184
10 8474240
11 -106035424
12 1459781056
13 -21914009728
14 356711937152
15 -6258266154752
16 117778607150592
17 -2366994133647360
18 50601711980789760
19 -1146653711692951552