# A012362 (b-file synthesized from sequence entry)
0 0
1 1
2 2
3 4
4 0
5 -60
6 -488
7 -1416
8 20160
9 427280
10 3830432
11 -7233536
12 -955342080
13 -18140316480
14 -120169970048
15 3583792700544
16 145171043297280
17 2388380775676160
18 -7380519436860928
19 -1710892457585202176