# A012576 (b-file synthesized from sequence entry)
0 0
1 0
2 2
3 -3
4 4
5 -20
6 -82
7 1701
8 -13176
9 102096
10 -499878
11 -4097115
12 139441740
13 -2543404500
14 36360855750
15 -325904118435
16 -572181239280
17 111107478652800
18 -3446722823542350
19 73786652661818925